{"id":"26647f17-fc7d-4d10-a8c9-518da24df206","arxiv_id":"2608.10638","paper_version":1,"verdict":"REJECT","confidence":"MODERATE","novelty_score":5.0,"correctness_risk":"high","formal_verification":"none","parameter_count":9,"one_line_summary":"A reanalysis of ultrahigh-field graphene magneto-absorption attributes the anomalous spectra to collective Alfvén waves, but the decisive model parameter is fitted, not derived, and no new magneto-optical data are presented.","lead":"This paper reanalyzes earlier mega-gauss magnetic field measurements on graphene and claims the observed absorption lines are collective Alfvén waves in an electron-hole plasma, not ordinary cyclotron resonances. The evidence is a new ARPES measurement plus a flexible model whose key ingredient is added by hand.","discovery_kind":"new_application","skeptic_critique":{"model":"deepseek-v4-flash","headline":"The claimed N=0+/0- crossing and Alfvén-wave interpretation rest entirely on an unconstrained κB coupling in Eq. A1 that is never derived, quantified, or independently tested, while Sec. 3.3 concedes the bilayer model is 'physically inappropriate' for the monolayer.","rationale":"The reader's weakest-assumption analysis and my stress-test converge on the same load-bearing point: the N=0+/0- crossing is manufactured by an unconstrained κB term. The paper itself flags the central modeling weakness in Sec. 3.3, stating that direct application of the bilayer-derived Hamiltonian to the monolayer is physically inappropriate. The replacement of that inapplicable model with a linear-in-B coupling κB is not derived from the ARPES band structure, is never given a numerical value, and is the only mechanism that makes the zero-mode levels converge and invert. Because the Alfvén-wave interpretation and the electron-hole plasma claim both depend on this crossing, the central argument is unsupported as stated. The ARPES data and the extreme-field measurements may have standalone experimental value, and I am not disputing the existence of the observed spectra or the raw data. But the paper's central physical conclusion that the spectra 'represent absolutely nothing other than the collective Alfvén wave propagation' requires a parameter that is absent, unquantified, and essential. Consequently, the reader's REJECT verdict appears justified; my read does not change it.","tokens_in":14648,"tokens_out":3563,"duration_ms":39021,"concrete_test":"Derive κ from the ARPES-fitted distorted dispersion in Sec. 3.2 by computing the Berry curvature and orbital magnetic moment m(k) of Eq. (1) near K, after Peierls substitution, so that the linear-in-B coupling is fixed by m(K)·B rather than chosen freely. Then numerically diagonalize the full LL Hamiltonian (Eq. A1) with this derived κ and check whether the N=0+ and N=0- levels cross between 160 and 200 T for Δ0=0.1 eV and vF=1.06×10^6 m/s. If the derived κ is zero, opposite in sign, or insufficient to overcome the 0.2 eV zero-field gap, the claimed crossing and the Alfvén-wave interpretation fail. A useful robustness check is to vary vF and Δ0 by ±10% and confirm the crossover field remains within the claimed 160-200 T window; if it moves outside that window, the threshold is not a robust prediction.","verdict_should_be":"UNCHANGED","load_bearing_attack":"The central claim is that the N=0+ and N=0- Landau levels cross near 160-200 T, creating a compensated electron-hole plasma whose response is the observed Alfvén-wave absorption. Every step of that narrative depends on the linear-in-B coupling κB introduced in Appendix Eq. A1. Yet κ is never derived from the ARPES band parameters, never measured, and no numerical value is given anywhere in the paper or supplement. Sec. 3.3 explicitly concedes that 'directly applying this bilayer-derived formulation to calculate the Landau levels (LLs) of our strictly monolayer system is physically inappropriate'; the κB term is then introduced as an ad hoc replacement for the bilayer γ1 physics. In Eqs. A2-A3 the diagonal zero-mode energy is ±Δ0 independent of κ·n·B, so the claimed zero-mode inversion can only arise from the off-diagonal κB coupling to higher LLs. Without a κ value, no calculation establishes that the crossing occurs at 160-200 T, or that it occurs at all. The high-field spectra in Fig. 4 are reproduced using Eq. S5 with free parameters (vF, ΔB, EF, ΓB, τ; Table 2), so the numerical agreement does not independently validate the crossing mechanism. If κ were zero, wrong in sign, or too small, the zero-field gap would simply widen with field (magnetic catalysis), and the broad absorption would require a different origin. The paper's own admission in Sec. 3.3, combined with the absence of any constraint on κ, makes the level crossing and hence the Alfvén-wave interpretation load-bearing on an unsupported parameter.","agreement_with_reader":"agree"},"referee_report":{"model":"deepseek-v4-flash","summary":"The paper reports infrared magneto-absorption spectra of n-doped epitaxial graphene on 4H-SiC measured in pulsed fields up to 560 T using single-turn coil and electromagnetic flux compression techniques. ARPES measurements reveal a distorted Dirac dispersion with a camel-back structure and a gap of about 0.2 eV, which the authors model with a bilayer-graphene-type dispersion (Eq. 1). From the extracted band parameters they construct Landau-level fan charts using an effective Hamiltonian that includes a linear-in-B coupling κB (Appendix Eq. A1). This term makes the N=0+ and N=0- Landau levels converge and cross near 160-200 T, which is interpreted as a transition into a compensated electron-hole plasma. The broad high-field absorption features are then fitted with a collective Alfvén-wave dielectric function (Eq. S5), yielding parameters vF, ΔB, EF, ΓB, and τ; the extracted ΔB = 0.12 eV is compared with Δ0 = 0.10 eV as evidence of field-enhanced sublattice asymmetry. The paper concludes that the megagauss response is a laboratory analog of relativistic pair plasmas.","tokens_in":15131,"tokens_out":6227,"duration_ms":61460,"significance":"If the central scenario were correct, the paper would report a remarkable collective hydromagnetic response in a two-dimensional Dirac material, with potential implications for analogies between condensed matter and astrophysical pair plasmas. The experimental data themselves, obtained in the megagauss range up to 560 T, are a valuable and unusual resource, and the ARPES measurements clearly document a camel-back dispersion and a large gap in this epitaxial system. The paper is also transparent about the effective nature of its model, explicitly flagging in Sec. 3.3 that the bilayer-derived formulation is not directly applicable to a monolayer. However, the paper's main scientific claim—the zero-mode Landau-level crossing and the Alfvén-wave interpretation—rests entirely on an unconstrained and unexplained linear coupling κB, and the supporting fit to the high-field spectra is circular in its use of the same parameters to confirm the crossing. As presented, the analysis does not establish the proposed physical mechanism.","major_comments":[{"comment":"The linear magnetic-field coupling κB introduced in Eq. (A1) is the sole mechanism that makes the N=0+ and N=0- Landau levels converge and cross, yet it is never derived from the ARPES band parameters, never assigned a numerical value, and never constrained by an independent measurement. Section 3.3 itself concedes that applying the bilayer-derived formulation to a monolayer is 'physically inappropriate', and the κB term is then inserted as an ad hoc replacement for the γ1 physics. Because the diagonal zero-mode energies in Eqs. (A2)-(A3) are ±Δ0, the claimed inversion can only arise from the off-diagonal κB coupling; for κ=0, for a smaller value, or for the opposite sign, the gap would instead widen with field (magnetic catalysis) and the 160-200 T crossing would not occur. The fan chart in Fig. 3 is therefore not a prediction of the measured band parameters but an assumption. The authors must provide a microscopic derivation of κ from the distorted band structure or an independent determination of its value and sign before the crossing scenario can be accepted.","section":"Sec. 3.3 and Appendix Eq. A1"},{"comment":"The Alfvén-wave model of Eq. (S5) is used to fit the same high-field spectra shown in Fig. 4 with five free parameters (vF, ΔB, EF, ΓB, τ; Table 2), and the resulting parameters are then inserted into the fan chart of Fig. 5, which is cited as confirming the zero-mode crossing and the shoulder at roughly 200 T. This is circular: the shoulder is reproduced by a model whose input already includes the renormalized ΔB and the very crossing the model is supposed to validate. The fit quality is presented only as 'excellent', with no residuals, confidence intervals, or comparison to a conventional cyclotron-resonance or other alternative model. The claim in Sec. 3.4 that the features 'represent absolutely nothing other than' Alfvén-wave propagation is therefore not supported by the evidence. The authors should provide quantitative model-comparison statistics (e.g., reduced chi-squared or information criteria), parameter uncertainties, and ideally an out-of-sample test in which one sample is fitted and the other is predicted.","section":"Sec. 3.4, Eq. S5, and Table 2"},{"comment":"The reported enhancement ΔB = 0.12 eV > Δ0 = 0.10 eV is read off the same Alfvén-wave fit that defines the post-crossover plasma phase; there is no independent high-field measurement of the sublattice asymmetry. The statement that this difference 'directly signifies' a macroscopic many-body amplification of the sublattice asymmetry is thus an interpretation of a fit parameter rather than an observed quantity. An independent test would be, for example, a prediction of the field dependence of individual Landau-level transition energies or a separate probe of the gap in the plasma phase; without such a test, the ΔB enhancement does not provide independent support for the Alfvén scenario.","section":"Sec. 3.4 and Table 2"}],"minor_comments":[{"comment":"In Eqs. (S1) and (S2), τ is treated as a dimensionless broadening parameter, but Table 2 lists τ in femtoseconds; the relationship between these two quantities should be clarified.","section":"Eqs. S1-S2 and Table 2"},{"comment":"The text and figure mark fields above about 500 T as potentially contaminated by stray infrared radiation, yet the Alfvén fit and the fan chart in Fig. 5 extend to 560-800 T; the manuscript should state explicitly how the fit treats the potentially contaminated region.","section":"Fig. 4 and Sec. 3.4"},{"comment":"The phrase 'Alfv’en' should be corrected to 'Alfvén'.","section":"Sec. 3.4"},{"comment":"The interpretation of the low-field features as collective helicon waves is mentioned qualitatively, but no helicon dispersion, model, or fitting procedure is provided; either add the model or clearly label this part as a qualitative suggestion.","section":"Sec. 3.3"},{"comment":"Table 2 lists E_F = 40 meV for Sample A and 100 meV for Sample B, whereas Table 1 lists 50 meV and 90 meV; the discrepancies and their origin should be explained.","section":"Tables 1 and 2"}],"recommendation":"reject","confidential_remarks":"The central claim of the paper rests on the linear-in-B coupling κB, which is introduced without derivation, without a numerical value, and without any independent constraint. Section 3.3 explicitly disavows the applicability of the bilayer-derived model to a monolayer, and the Alfvén-wave fit is circular in its confirmation of the crossing. These are load-bearing deficiencies that cannot be repaired by minor edits within the present manuscript; they require new theory or new experimental analysis. If the authors can supply a controlled derivation of κB and an out-of-sample validation of the Alfvén model, a future submission could be reconsidered, but the current version does not establish its main physical claim."},"author_rebuttal":null,"desk_editor":{"model":"deepseek-v4-flash","letter":"Here is my honest take.\n\nThe genuinely new piece is the ARPES result: a camel-back Dirac dispersion with an ~0.2 eV gap on n-doped epitaxial graphene, fitted with a bilayer-like expression to give vF = 1.06×10^6 m/s, Δ0 = 0.1 eV, γ1 = 0.39 eV. If that measurement survives scrutiny, it is a real addition to the substrate-gap literature, and it is the strongest part of the paper. The magneto-optical data themselves were published before, so the advertised physics has to come from the interpretation.\n\nThe interpretation is not supported. The fan-chart crossing of N=0+ and N=0− near 160–200 T is produced entirely by the linear κB coupling in Appendix Eq. A1. That term is never derived from the ARPES band parameters, never independently constrained, and no numerical value is reported anywhere. The paper concedes in Sec. 3.3 that applying a bilayer-derived Hamiltonian to a monolayer is 'physically inappropriate,' then replaces the bilayer physics with an ad hoc κ that is supposed to represent the same band warping. That is circular: the ARPES data justify neither the form of κ nor its magnitude, and without a value or a sign the crossing at 200 T is a narrative, not a calculation. A reader cannot tell whether the crossing is robust or an artifact of parameter choice.\n\nThe Alfvén-wave analysis has a related soft spot. The model in Eq. S5 is fit to the same spectra with vF, ΔB, EF, ΓB, and τ as free parameters, and the text calls the agreement excellent without residuals, error bars, or a quantitative comparison against a single-particle CR fit. The shoulder near 200 T is then cited as confirmation of the crossing, but since the crossing was manufactured by κ, that confirmation is not independent. The claimed ΔB > Δ0 enhancement (0.12 vs 0.10 eV) comes from the same fit, so it inherits the same problem. The short τ≈4 fs is at least acknowledged and given a physical rationale.\n\nNone of this means the paper is worthless. The ARPES data may stand on their own, and the authors have a rare experimental capability—megagauss infrared transmission—that gives their measurements weight. A serious referee should see it, because the question of what those broad 100–560 T absorption features actually are is legitimate and the data set is one of very few at those fields. But the central collective-Alfvén-wave claim, as written, is not established. I would expect either major revision with a derived or independently constrained κ, or separation of the ARPES result from the speculative Alfvén interpretation. Send it to review; just don't expect the current version to survive.","headline":"The ARPES camel-back measurement is the real nugget; the Alfvén-wave story rests on an unconstrained κB coupling and should be treated as speculation until κ is derived or measured.","tokens_in":15611,"tokens_out":3643,"would_cite":false,"duration_ms":37626,"reading_group":"maybe","serious_thinker":"yes","would_accept_peer_review":true},"rs_alignment":null,"lean_confirmation":null,"pith_extraction":{"msc":[],"pacs":["71.70.Di","73.22.Pr","78.20.Ls"],"model":"deepseek-v4-flash","headline":"This paper claims that the anomalously broad infrared absorption of electron-doped graphene at fields up to 560 T is a collective Alfvén wave in a field-created electron-hole plasma, not cyclotron resonance.","keywords":["ultrahigh magnetic fields","graphene","magneto-optical spectroscopy","Alfvén waves","Landau level crossing","ARPES","electron-hole plasma","sublattice asymmetry"],"falsifier":"Directly measure the field dependence of the two zero Landau levels with a probe that does not assume the Alfvén model — for example, high-field scanning tunnelling spectroscopy of the $N = 0^+$ and $N = 0^-$ states, or magneto-Raman detection of the gap — and check whether they converge and cross near 160–200 T; if the levels do not invert (or if an independent determination shows $\\kappa$ is too small or of the wrong sign to close the 0.2 eV gap at that field), the electron-hole plasma and the Alfvén-wave assignment collapse. A cheaper version: measure the shoulder's resonance field at a second photon energy and check whether the same, unadjusted $\\kappa$ reproduces it.","tokens_in":14449,"feed_emoji":"🧲","tokens_out":16063,"duration_ms":130863,"temperature":0.7,"pith_summary":"The paper claims that the infrared absorption of heavily electron-doped epitaxial graphene in ultrahigh magnetic fields — up to 560 T — is not the ordinary cyclotron resonance of individual electrons, but a collective hydromagnetic wave (an Alfvén wave) propagating in an electron-hole plasma that is created when the two zero Landau levels cross near 160–200 T. The argument runs through a distorted Dirac band measured by ARPES: a 'camel-back' dispersion with a ~0.2 eV gap, fitted with a bilayer-style formula whose parameters feed a Landau-level fan chart predicting the level crossing. If the claim is right, megagauss fields turn a 2D solid into a fully compensated, charge-neutral electron-hole plasma that is a tabletop analog of the relativistic electron-positron plasmas of pulsar magnetospheres, and the anomalously broad spectra that earlier work treated as single-particle cyclotron resonance are reinterpreted as a collective mode. The authors fit the extreme-field spectra with a collective Alfvén wave model and read the enlarged sublattice asymmetry (0.10 to 0.12 eV) as a magnetic-field-driven many-body effect.","feed_headline":"At 200 T, graphene's zero Landau levels cross and spark an Alfvén wave","feed_subtitle":"Zero Landau levels cross near 200 T, turning doped graphene's absorption into a collective hydromagnetic wave.","key_machinery":"The argument is carried by an effective band model and a field-dependent Landau-level Hamiltonian. The band model is a bilayer-graphene dispersion $E_\\pm(k) = \\pm\\sqrt{\\Delta_0^2 + \\gamma_1^2/2 + (v_F \\hbar k)^2} - \\sqrt{\\gamma_1^4/4 + (v_F\\hbar k)^2(\\gamma_1^2 + 4\\Delta_0^2)}$, used with monolayer parameters ($v_F = 1.06\\times10^6\\ \\mathrm{m/s}$, $\\Delta_0 = 0.10\\ \\mathrm{eV}$, $\\gamma_1 = 0.39\\ \\mathrm{eV}$) to reproduce the camel-back band that ARPES resolves. The Hamiltonian assigns the zero modes diagonal energies $E^0_{n,\\mathrm{CB}} = \\Delta_0 + \\kappa n B$ and $E^0_{n,\\mathrm{VB}} = -\\Delta_0 - \\kappa n B$, i.e., a linear magnetic-field coupling $\\kappa B$ that the paper never quantifies and presents as the macroscopic realization of the Berry-curvature orbital magnetic moment of the warped cone; it is this $\\kappa B$ term, not the standard inter-level coupling $\\beta\\sqrt{n}B$ ($\\beta = v_F\\sqrt{2e\\hbar}$), that closes the gap, brings the zero modes to their 160–200 T crossing, and inverts the band order. The absorption spectra are then computed from the collective Alfvén wave dielectric function by summing over Fermi-Dirac-occupied Landau levels with a scattering lifetime $\\tau \\approx 4$ fs, which turns the fan chart into the fitted line shapes.","core_discovery":"On the paper's terms, the central discovery is a field-driven change of regime in a gapped Dirac system. The $N = 0^+$ and $N = 0^-$ Landau levels, separated at zero field by the 0.2 eV sublattice-asymmetry gap, converge and cross near 160–200 T under a linear magnetic-field coupling $\\kappa B$ assigned to the zero modes; beyond the crossing the gap is inverted, and the system becomes a dense, fully compensated electron-hole plasma. In this regime the measured absorption under a 0.636 eV thulium-fibre laser — a massive resonance near 400 T with a shoulder near 200 T — is reproduced by a collective Alfvén wave dielectric function, and the fitted field-renormalized asymmetry $\\Delta_B = 0.12\\ \\mathrm{eV}$ exceeds the zero-field value $\\Delta_0 = 0.10\\ \\mathrm{eV}$. The authors state that the magneto-absorption features 'represent absolutely nothing other than the collective Alfvén wave propagation,' making the megagauss graphene a pristine laboratory analog of relativistic electron-positron plasmas.","pith_inferences":["The paper's own mechanism implies a falsifiable scaling that it does not state: the same unquantified $\\kappa$ that fixes the 160–200 T crossing should also fix the resonance field for any other photon energy, so a second laser wavelength would discriminate the Alfvén model from single-particle fits with no free parameters.","If the crossing interpretation is correct, the system realizes the reverse of magnetic catalysis — field-induced gap closure and inversion rather than gap opening — which predicts that other substrate-interacting Dirac materials with a comparable zero-field gap would show the same regime change at fields scaled by their gap size.","The claim that $\\Delta_B$ rises while $v_F$ stays essentially fixed suggests the many-body renormalization is primarily orbital; an independent probe of the gap at ultrahigh fields, such as magneto-Raman scattering or two-colour pump-probe across the camel-back, could measure $\\Delta_B$ without relying on the Alfvén line shape.","A temperature or gate-density sweep across the crossing should sharpen the shoulder-versus-peak structure if the plasma picture is right, because the degree of electron-hole compensation at the crossing is set by doping and thermal occupation, whereas a single-particle transition would barely respond to either."],"forward_implications":["The STC-regime absorption dips that look like cyclotron resonance are collective electron plasma modes (helicon-like), so reading them with the single-particle $\\sqrt{B}$ rule gives systematically wrong assignments — the $0^+\\to 2^+$ transition, not $0^+\\to 1^+$, is the relevant one at low fields.","Near 160–200 T the $N=0^+$ and $N=0^-$ levels cross and invert the gap, driving the doped monolayer into a fully compensated electron-hole plasma whose optical response is a cooperative electron-hole excitation.","The field-renormalized sublattice asymmetry exceeds its zero-field value ($\\Delta_B = 0.12\\ \\mathrm{eV} > \\Delta_0 = 0.10\\ \\mathrm{eV}$), evidence that the strong electron-hole interaction amplifies the intrinsic A–B asymmetry rather than merely widening a gap.","Because the post-crossing fluid is two-component and charge-neutral, it decouples charge and momentum currents, unlike a single-component Galilean-invariant metal, providing a tabletop analog of relativistic electron-positron and quark-gluon plasmas.","The Alfvén resonance survives even though the fitted single-particle scattering lifetime is extremely short ($\\tau \\approx 4$ fs), because the collective mode outlasts individual particle coherence once the magnetic tension stiffens the plasma."],"supporting_citations":[{"why":"Supplies the bilayer-graphene dispersion formula used to fit the ARPES camel-back band and to set the band parameters ($v_F$, $\\Delta_0$, $\\gamma_1$) for the Landau-level calculation.","marker":"[3]"},{"why":"The earlier megagauss experiment whose raw magneto-absorption spectra are reanalyzed and reinterpreted; the baseline every new claim must improve on.","marker":"[7]"},{"why":"Supplies the higher-order band-warping theory whose linear momentum term the $\\kappa B$ coupling is presented as realizing; the theoretical anchor for the zero-mode level crossing.","marker":"[8]"},{"why":"Reports the substrate-induced A–B sublattice symmetry breaking and gap in epitaxial graphene on SiC, supporting the 0.2 eV zero-field gap used throughout.","marker":"[12]"},{"why":"The reference for the collective Alfvén wave dielectric function (Eq. S5) that generates the fitted high-field absorption curves.","marker":"[21]"},{"why":"Provides the typical graphene Landau-level scattering lifetime (10–20 fs) against which the fitted 4 fs lifetime is contrasted to argue for the collective mode.","marker":"[22]"},{"why":"The magnetic-catalysis theory of zero-mode Landau levels that the paper inverts: instead of gap opening, its $\\kappa B$ mechanism closes and inverts the gap.","marker":"[23]"},{"why":"The two-component hydrodynamic plasma analysis used to frame the compensated electron-hole fluid as a relativistic-plasma analog and to contrast it with a single-component metal.","marker":"[29]"}],"fun_headline_variants":["Zero Landau levels cross near 200 T, sparking graphene Alfvén waves","Graphene's zero-mode crossing at 200 T ignites a collective plasma wave","Mega-gauss fields turn graphene into an Alfvén-wave electron-hole plasma","At 200 T, graphene's gap inverts to host a 2D stellar plasma"],"cache_read_input_tokens":3200,"weakest_assumption_plain":"The load-bearing premise is the unmeasured linear magnetic-field coupling $\\kappa B$ placed in the Landau-level Hamiltonian: it is the only mechanism that pulls the $N = 0^+$ and $N = 0^-$ levels into their 160–200 T crossing, yet the paper assigns it no numerical value, derives it from no ARPES band parameter, and concedes in Sec. 3.3 that applying the bilayer-derived model to the monolayer is 'physically inappropriate.'","fun_headline_variants_meta":{"raw":{"variants":["Zero Landau levels cross near 200 T, sparking graphene Alfvén waves","Graphene's zero-mode crossing at 200 T ignites a collective plasma wave","Mega-gauss fields turn graphene into an Alfvén-wave electron-hole plasma","At 200 T, graphene's gap inverts to host a 2D stellar plasma"]},"model":"deepseek-v4-flash","effort":"low","cost_usd":0.000582,"raw_usage":{"total_tokens":2833,"prompt_tokens":1129,"completion_tokens":1704,"prompt_tokens_details":{"cached_tokens":384},"prompt_cache_hit_tokens":384,"prompt_cache_miss_tokens":745,"completion_tokens_details":{"reasoning_tokens":1613}},"tokens_in":745,"tokens_out":1704,"duration_ms":10882,"temperature":1.0,"reasoning_tokens":1613,"cache_read_input_tokens":384,"cache_creation_input_tokens":0},"cache_creation_input_tokens":0},"created_at":"2026-08-12T20:22:45.603402+00:00","model_set":{"reader":"deepseek-v4-flash"},"falsifier":"Directly measure the field dependence of the two zero Landau levels with a probe that does not assume the Alfvén model — for example, high-field scanning tunnelling spectroscopy of the $N = 0^+$ and $N = 0^-$ states, or magneto-Raman detection of the gap — and check whether they converge and cross near 160–200 T; if the levels do not invert (or if an independent determination shows $\\kappa$ is too small or of the wrong sign to close the 0.2 eV gap at that field), the electron-hole plasma and the Alfvén-wave assignment collapse. A cheaper version: measure the shoulder's resonance field at a second photon energy and check whether the same, unadjusted $\\kappa$ reproduces it.","supporting_citations":[{"cited_title":"Nakamura, H","cited_arxiv_id":null,"evidence_quote":"The earlier megagauss experiment whose raw magneto-absorption spectra are reanalyzed and reinterpreted; the baseline every new claim must improve on."},{"cited_title":"Ando and H","cited_arxiv_id":null,"evidence_quote":"Supplies the higher-order band-warping theory whose linear momentum term the $\\kappa B$ coupling is presented as realizing; the theoretical anchor for the zero-mode level crossing."},{"cited_title":null,"cited_arxiv_id":null,"evidence_quote":"Reports the substrate-induced A–B sublattice symmetry breaking and gap in epitaxial graphene on SiC, supporting the 0.2 eV zero-field gap used throughout."},{"cited_title":"Bassani and G","cited_arxiv_id":null,"evidence_quote":"The reference for the collective Alfvén wave dielectric function (Eq. S5) that generates the fitted high-field absorption curves."},{"cited_title":"Jiang, E","cited_arxiv_id":null,"evidence_quote":"Provides the typical graphene Landau-level scattering lifetime (10–20 fs) against which the fitted 4 fs lifetime is contrasted to argue for the collective mode."},{"cited_title":null,"cited_arxiv_id":null,"evidence_quote":"The magnetic-catalysis theory of zero-mode Landau levels that the paper inverts: instead of gap opening, its $\\kappa B$ mechanism closes and inverts the gap."},{"cited_title":null,"cited_arxiv_id":null,"evidence_quote":"The two-component hydrodynamic plasma analysis used to frame the compensated electron-hole fluid as a relativistic-plasma analog and to contrast it with a single-component metal."}],"review_version":1}