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arxiv: 2606.10689 · v1 · pith:YEHEEDEUnew · submitted 2026-06-09 · ✦ hep-th · cond-mat.mtrl-sci· hep-ph· nucl-th

Chiral Plasma under Strong Magnetic Fields: A Holographic Analysis of Transport Phenomena

Pith reviewed 2026-06-27 12:30 UTC · model grok-4.3

classification ✦ hep-th cond-mat.mtrl-scihep-phnucl-th
keywords chiral plasmaholographic transportchiral magnetic effectmagnetoresistanceaxial anomalyconstitutive relationsAdS/CFT correspondence
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0 comments X

The pith

Holography computes thirteen momentum-dependent transport coefficients for chiral plasma in strong magnetic fields

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper sets out constitutive relations for the electric and axial currents in a chiral plasma placed in an arbitrarily strong constant magnetic field and a weak electric field. These relations are written in terms of thirteen transport coefficient functions that depend on both momentum and the magnetic field strength. The functions are obtained from a holographic calculation that resums all orders in the gradient expansion. The same framework is then used to examine anomaly-driven effects such as negative magnetoresistance and chiral magnetic waves outside the usual hydrodynamic regime. A reader would care because the result supplies concrete expressions that remain valid when magnetic fields are too large for standard fluid approximations.

Core claim

Employing all-order gradient resummation, the constitutive relations for electric and axial currents are parameterized by thirteen momentum- and magnetic-field-dependent transport coefficient functions; these functions are computed from a holographic U(1)V × U(1)A Maxwell–Chern–Simons theory in Schwarzschild–AdS5 in the probe limit, and the resulting expressions are applied to negative magnetoresistance and chiral magnetic waves beyond the naive hydrodynamic limit.

What carries the argument

All-order gradient resummation inside a holographic U(1)V × U(1)A Maxwell–Chern–Simons theory in Schwarzschild–AdS5 (probe limit), which supplies the thirteen transport coefficient functions that enter the constitutive relations for the currents.

If this is right

  • The constitutive relations remain valid for arbitrarily strong constant magnetic fields.
  • Negative magnetoresistance receives corrections from the full set of momentum-dependent coefficients.
  • Chiral magnetic waves propagate with dispersion relations modified by the resummed transport functions.
  • The thirteen functions encode all orders in the gradient expansion rather than a truncated hydrodynamic series.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • The same holographic setup could be used to predict the electric conductivity tensor in Weyl semimetals under laboratory-scale magnetic fields.
  • Comparison of the predicted momentum dependence with heavy-ion collision data at varying beam energies would test the probe-limit assumption.
  • Extending the calculation beyond the probe limit would reveal how back-reaction alters the thirteen coefficient functions.
  • The framework supplies a controlled way to interpolate between weak-field hydrodynamics and the strong-field regime relevant to the early universe.

Load-bearing premise

The probe limit of the holographic U(1)V × U(1)A Maxwell–Chern–Simons theory in Schwarzschild–AdS5 accurately captures the transport physics of real chiral plasmas.

What would settle it

A measurement or lattice simulation that extracts the momentum dependence of the chiral magnetic conductivity or the longitudinal conductivity at strong magnetic field and finds a functional form that differs from the thirteen holographic functions.

read the original abstract

Chiral plasma appears in several areas of physics, historically starting from primordial plasma in the early Universe, then in quark-gluon plasma produced in heavy ion collisions, and, more recently, in Dirac and Weyl semimetals. The major signature of the plasma is the non-conservation of the axial current due to the chiral anomaly and the emergence of new, anomaly-induced transport phenomena. In this paper, we study the plasma exposed to arbitrarily strong constant magnetic and weak electric fields. Employing all-order gradient resummation, we write down constitutive relations for electric and axial currents parameterized by thirteen momentum- and magnetic- field-dependent transport coefficient functions. The latter are computed utilizing a theoretical lab for a realistic plasma, namely a holographic $U(1)_V \times U(1)_A$ Maxwell--Chern--Simons theory in Schwarzschild--AdS$_5$, in the probe limit. As an application, we revisit the phenomena of negative magnetoresistance and chiral magnetic waves, beyond the naive hydrodynamic limit.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

2 major / 2 minor

Summary. The manuscript claims to derive constitutive relations for electric and axial currents in chiral plasma under arbitrarily strong constant magnetic fields and weak electric fields. It employs all-order gradient resummation to parameterize these relations with thirteen momentum- and B-dependent transport coefficient functions, which are computed in a holographic U(1)_V × U(1)_A Maxwell-Chern-Simons theory on Schwarzschild-AdS_5 in the probe limit. These are then applied to revisit negative magnetoresistance and chiral magnetic waves beyond the hydrodynamic regime.

Significance. If the central computation is robust, the all-order resummation of transport coefficients in a controlled holographic setting would provide a useful extension beyond hydrodynamics for anomaly-induced phenomena, with potential relevance to heavy-ion collisions and condensed-matter systems. The explicit extraction of 13 functions is a concrete output that could be tested against other approaches.

major comments (2)
  1. [Abstract and model description] Abstract and model section: the probe-limit assumption on fixed Schwarzschild-AdS_5 for arbitrarily strong B is load-bearing for the claimed applicability to real chiral plasmas. The magnetic stress-energy is O(B²) and must backreact on the metric (changing the horizon, asymptotic geometry, and fluctuation spectrum), yet the paper uses a neutral black-brane background without this deformation. This directly impacts the extracted transport functions and their use for negative magnetoresistance and chiral magnetic waves.
  2. [Abstract] The central claim of 'realistic plasma' modeling (abstract) rests on the probe U(1)V × U(1)A Maxwell-Chern-Simons setup, but no justification or error estimate is provided for neglecting backreaction when |B| is arbitrarily large while E is weak. This creates a potential inconsistency with the stated goal of capturing transport in strong-B regimes.
minor comments (2)
  1. Clarify the precise definition and normalization of the thirteen transport coefficient functions (e.g., which combinations of J^V and J^A they multiply) to aid reproducibility.
  2. The abstract mentions 'all-order gradient resummation' but provides no explicit statement of the resummation procedure or convergence checks; a brief outline in the main text would improve clarity.

Simulated Author's Rebuttal

2 responses · 1 unresolved

We thank the referee for the careful reading and constructive comments on our manuscript. The points raised concern the validity of the probe-limit approximation for strong magnetic fields, which we address point by point below.

read point-by-point responses
  1. Referee: [Abstract and model description] Abstract and model section: the probe-limit assumption on fixed Schwarzschild-AdS5 for arbitrarily strong B is load-bearing for the claimed applicability to real chiral plasmas. The magnetic stress-energy is O(B²) and must backreact on the metric (changing the horizon, asymptotic geometry, and fluctuation spectrum), yet the paper uses a neutral black-brane background without this deformation. This directly impacts the extracted transport functions and their use for negative magnetoresistance and chiral magnetic waves.

    Authors: We agree that the probe limit neglects gravitational backreaction from the O(B²) stress-energy of the magnetic field. This is a deliberate approximation chosen to enable the all-order gradient resummation in a fixed background, which would otherwise require solving a significantly more involved system of equations in a backreacted geometry. The neutral Schwarzschild-AdS5 background is standard in probe-limit holographic models for anomaly-induced transport. We will add a paragraph in the model section (and a corresponding note in the abstract) explicitly stating the regime of validity: the approximation holds when the energy density of the U(1) fields remains subdominant to the black-brane energy density, consistent with the large-N, probe-flavor limit of the dual theory. We will also qualify the applicability to real chiral plasmas as an initial controlled computation rather than a fully backreacted result. revision: partial

  2. Referee: [Abstract] The central claim of 'realistic plasma' modeling (abstract) rests on the probe U(1)V × U(1)A Maxwell-Chern-Simons setup, but no justification or error estimate is provided for neglecting backreaction when |B| is arbitrarily large while E is weak. This creates a potential inconsistency with the stated goal of capturing transport in strong-B regimes.

    Authors: The phrasing 'theoretical lab for a realistic plasma' in the abstract is intended to highlight that the model incorporates the chiral anomaly and the relevant U(1)V × U(1)A structure, not to claim quantitative accuracy for arbitrary B. We will revise the abstract and introduction to replace this phrasing with 'holographic model capturing key features of chiral plasmas' and add a brief justification of the probe limit as a first step that isolates the matter-sector transport. A quantitative error estimate for the neglected backreaction at arbitrary B would require a separate computation in the backreacted geometry (e.g., magnetized charged black branes), which lies outside the scope of the present work. revision: partial

standing simulated objections not resolved
  • Quantitative error estimate for neglecting backreaction at arbitrarily strong B without performing the corresponding backreacted calculation

Circularity Check

0 steps flagged

No circularity: transport coefficients are direct outputs of holographic model equations

full rationale

The paper selects a holographic U(1)V × U(1)A Maxwell-Chern-Simons theory on fixed Schwarzschild-AdS5 in the probe limit and solves its equations to obtain the thirteen momentum- and B-dependent transport functions that enter the constitutive relations. This is a standard forward computation from the chosen action, background, and boundary conditions; the output coefficients are not fitted to external data, not defined in terms of themselves, and not justified by a self-citation chain. The probe-limit assumption is an explicit model choice whose validity is a separate question of applicability, not a circular reduction of the derivation to its inputs.

Axiom & Free-Parameter Ledger

0 free parameters · 2 axioms · 0 invented entities

The central claim rests on the AdS/CFT correspondence (standard_math), the probe-limit approximation (domain_assumption), and the validity of all-order gradient resummation in the chosen background (domain_assumption). No free parameters or invented entities are mentioned in the abstract.

axioms (2)
  • standard math The AdS/CFT correspondence maps the strongly coupled plasma to classical gravity in AdS5 with Maxwell-Chern-Simons fields.
    Invoked by the choice of holographic model in the abstract.
  • domain assumption The probe limit (backreaction neglected) is sufficient to capture the transport coefficients of interest.
    Explicitly stated in the abstract as the regime of the calculation.

pith-pipeline@v0.9.1-grok · 5721 in / 1315 out tokens · 22836 ms · 2026-06-27T12:30:27.424413+00:00 · methodology

discussion (0)

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Reference graph

Works this paper leans on

70 extracted references · 40 linked inside Pith

  1. [1]

    Adler,Axial-vector vertex in spinor electrodynamics,Phys

    S.L. Adler,Axial-vector vertex in spinor electrodynamics,Phys. Rev.177(1969) 2426

  2. [2]

    Bell and R

    J.S. Bell and R. Jackiw,A pcac puzzle:π 0 →γγin theσ-model,Nuovo Cim. A60(1969) 47

  3. [3]

    Grasso and H.R

    D. Grasso and H.R. Rubinstein,Magnetic fields in the early universe,Phys. Rept.348(2001) 163 [astro-ph/0009061]

  4. [4]

    Kuzmin, V.A

    V.A. Kuzmin, V.A. Rubakov and M.E. Shaposhnikov,On the Anomalous Electroweak Baryon Number Nonconservation in the Early Universe,Phys. Lett. B155(1985) 36

  5. [5]

    Vilenkin and D.A

    A. Vilenkin and D.A. Leahy,Parity nonconservation and the origin of cosmic magnetic fields,Astrophys. J.254(1982) 77

  6. [6]

    Rubakov and M.E

    V.A. Rubakov and M.E. Shaposhnikov,Electroweak baryon number nonconservation in the early universe and in high-energy collisions,Usp. Fiz. Nauk166(1996) 493 [hep-ph/9603208]

  7. [8]

    Miransky and I.A

    V.A. Miransky and I.A. Shovkovy,Quantum field theory in a magnetic field: From quantum chromodynamics to graphene and Dirac semimetals,Phys. Rept.576(2015) 1 [1503.00732]

  8. [9]

    Kharzeev,Topology, magnetic field, and strongly interacting matter,Ann

    D.E. Kharzeev,Topology, magnetic field, and strongly interacting matter,Ann. Rev. Nucl. Part. Sci.65(2015) 193 [1501.01336]

  9. [10]

    Kharzeev,The chiral magnetic effect and anomaly-induced transport,Prog

    D.E. Kharzeev,The chiral magnetic effect and anomaly-induced transport,Prog. Part. Nucl. Phys.75(2014) 133 [1312.3348]

  10. [11]

    Son and P

    D.T. Son and P. Surowka,Hydrodynamics with Triangle Anomalies,Phys. Rev. Lett.103 (2009) 191601 [0906.5044]

  11. [12]

    Landsteiner,Notes on Anomaly Induced Transport,Acta Phys

    K. Landsteiner,Notes on Anomaly Induced Transport,Acta Phys. Polon. B47(2016) 2617 [1610.04413]

  12. [13]

    Fukushima, D.E

    K. Fukushima, D.E. Kharzeev and H.J. Warringa,The chiral magnetic effect,Phys. Rev. D 78(2008) 074033 [0808.3382]

  13. [14]

    Kharzeev and H.J

    D.E. Kharzeev and H.J. Warringa,Chiral Magnetic conductivity,Phys. Rev. D80(2009) 034028 [0907.5007]

  14. [15]

    Yee,Holographic Chiral Magnetic Conductivity,JHEP11(2009) 085 [0908.4189]

    H.-U. Yee,Holographic Chiral Magnetic Conductivity,JHEP11(2009) 085 [0908.4189]

  15. [16]

    Kharzeev, J

    D.E. Kharzeev, J. Liao and P. Tribedy,Chiral magnetic effect in heavy ion collisions: The present and future,Int. J. Mod. Phys. E33(2024) 2430007 [2405.05427]

  16. [17]

    Liu and X.-G

    Y.-C. Liu and X.-G. Huang,Anomalous chiral transports and spin polarization in heavy-ion collisions,Nucl. Sci. Tech.31(2020) 56 [2003.12482]

  17. [18]

    Hidaka, S

    Y. Hidaka, S. Pu, Q. Wang and D.-L. Yang,Foundations and applications of quantum kinetic theory,Prog. Part. Nucl. Phys.127(2022) 103989 [2201.07644]

  18. [19]

    Kamada, N

    K. Kamada, N. Yamamoto and D.-L. Yang,Chiral effects in astrophysics and cosmology, Prog. Part. Nucl. Phys.129(2023) 104016 [2207.09184]

  19. [20]

    Son and A.R

    D.T. Son and A.R. Zhitnitsky,Quantum anomalies in dense matter,Phys. Rev. D70(2004) 074018 [hep-ph/0405216]

  20. [21]

    Metlitski and A.R

    M.A. Metlitski and A.R. Zhitnitsky,Anomalous axion interactions and topological currents in dense matter,Phys. Rev. D72(2005) 045011 [hep-ph/0505072]

  21. [22]

    Huang and J

    X.-G. Huang and J. Liao,Axial Current Generation from Electric Field: Chiral Electric Separation Effect,Phys. Rev. Lett.110(2013) 232302 [1303.7192]

  22. [23]

    Q. Li, D.E. Kharzeev, C. Zhang, Y. Huang, I. Pletikosi´ c, A.V. Fedorov et al.,Chiral magnetic effect in zrte 5,Nature Physics12(2016) 550

  23. [24]

    Son and B.Z

    D.T. Son and B.Z. Spivak,Chiral Anomaly and Classical Negative Magnetoresistance of Weyl Metals,Phys. Rev. B88(2013) 104412 [1206.1627]

  24. [25]

    Armitage, E.J

    N.P. Armitage, E.J. Mele and A. Vishwanath,Weyl and Dirac Semimetals in Three Dimensional Solids,Rev. Mod. Phys.90(2018) 015001 [1705.01111]

  25. [26]

    Jimenez-Alba, K

    A. Jimenez-Alba, K. Landsteiner, Y. Liu and Y.-W. Sun,Anomalous magnetoconductivity and relaxation times in holography,JHEP07(2015) 117 [1504.06566]

  26. [27]

    Ong and S

    N.P. Ong and S. Liang,Review of experiments on the chiral anomaly in Dirac-Weyl semimetals,Nature Rev. Phys.3(2021) 394 [2010.08564]

  27. [28]

    Zhang and et al.,Room-temperature chiral charge pumping in dirac semimetals,Nature Communications8(2017) 13741

    C. Zhang and et al.,Room-temperature chiral charge pumping in dirac semimetals,Nature Communications8(2017) 13741. – 32 –

  28. [29]

    Yuan and et al.,The discovery of dynamic chiral anomaly in a weyl semimetal nbas, Nature Communications11(2020) 1259

    X. Yuan and et al.,The discovery of dynamic chiral anomaly in a weyl semimetal nbas, Nature Communications11(2020) 1259

  29. [30]

    Balduini, A

    F. Balduini, A. Molinari, L. Rocchino, V. Hasse, C. Felser, M. Sousa et al.,Intrinsic negative magnetoresistance from the chiral anomaly of multifold fermions,Nature Commun.15 (2024) 6526 [2404.19424]

  30. [31]

    Baggioli, S

    M. Baggioli, S. Grieninger and J. Stokes,Nonequilibrium steady states in driven holographic Weyl semi-metals,2602.22016

  31. [32]

    Rai and K

    N. Rai and K. Landsteiner,Hydrodynamic modes of holographic Weyl semimetals,Phys. Lett. B860(2025) 139212 [2408.06192]

  32. [33]

    X. Ji, Y. Liu, Y.-W. Sun and Y.-L. Zhang,A Weyl-Z 2 semimetal from holography,JHEP12 (2021) 066 [2109.05993]

  33. [34]

    Armitage, E.J

    N.P. Armitage, E.J. Mele and A. Vishwanath,Weyl and dirac semimetals in three-dimensional solids,Rev. Mod. Phys.90(2018) 015001

  34. [35]

    Kharzeev and H.-U

    D.E. Kharzeev and H.-U. Yee,Chiral magnetic wave,Phys. Rev. D83(2011) 085007 [1012.6026]. [36]ALICEcollaboration,Probing the chiral magnetic wave with charge-dependent flow measurements in Pb-Pb collisions at the LHC,JHEP12(2023) 067 [2308.16123]

  35. [36]

    Nain,Search for the chiral magnetic wave at STAR with isobar (Ru/Zr) and Au+Au collisions,EPJ Web Conf.364(2026) 03006

    A. Nain,Search for the chiral magnetic wave at STAR with isobar (Ru/Zr) and Au+Au collisions,EPJ Web Conf.364(2026) 03006

  36. [37]

    Rybalka, E.V

    D.O. Rybalka, E.V. Gorbar and I.A. Shovkovy,Hydrodynamic modes in a magnetized chiral plasma with vorticity,Phys. Rev. D99(2019) 016017

  37. [38]

    Y. Bu, T. Demircik and M. Lublinsky,Gradient resummation for nonlinear chiral transport: an insight from holography,Eur. Phys. J. C79(2019) 54 [1807.11908]

  38. [39]

    Y. Bu, T. Demircik and M. Lublinsky,Chiral transport in strong fields from holography, JHEP05(2019) 028 [1903.00896]

  39. [40]

    Lublinsky and E

    M. Lublinsky and E. Shuryak,Improved Hydrodynamics from the AdS/CFT,Phys. Rev. D 80(2009) 065026 [0905.4069]

  40. [41]

    Bu and M

    Y. Bu and M. Lublinsky,Linearized fluid/gravity correspondence: from shear viscosity to all order hydrodynamics,JHEP11(2014) 064 [1409.3095]

  41. [42]

    Bu and M

    Y. Bu and M. Lublinsky,All order linearized hydrodynamics from fluid-gravity correspondence,Phys. Rev. D90(2014) 086003 [1406.7222]

  42. [43]

    Y. Bu, M. Lublinsky and A. Sharon,U(1)current from the AdS/CFT: diffusion, conductivity and causality,JHEP04(2016) 136 [1511.08789]

  43. [44]

    Y. Ahn, M. Baggioli, Y. Liu and X.-M. Wu,Chiral magnetic waves in strongly coupled Weyl semimetals,JHEP03(2024) 124 [2401.07772]

  44. [45]

    Y. Bu, M. Lublinsky and A. Sharon,Anomalous transport from holography: Part i,JHEP11 (2016) 093 [1608.08595]

  45. [46]

    Y. Bu, M. Lublinsky and A. Sharon,Anomalous transport from holography: Part ii,Eur. Phys. J. C77(2017) 194 [1609.09054]

  46. [47]

    Y. Bu, T. Demircik and M. Lublinsky,Nonlinear chiral transport from holography,JHEP01 (2019) 078 [1807.08467]. – 33 –

  47. [48]

    Grozdanov, P.K

    S. Grozdanov, P.K. Kovtun, A.O. Starinets and P. Tadi´ c,Convergence of the Gradient Expansion in Hydrodynamics,Phys. Rev. Lett.122(2019) 251601 [1904.01018]

  48. [49]

    Blake, R.A

    M. Blake, R.A. Davison, S. Grozdanov and H. Liu,Many-body chaos and energy dynamics in holography,JHEP10(2018) 035 [1809.01169]

  49. [50]

    Grozdanov, P.K

    S. Grozdanov, P.K. Kovtun, A.O. Starinets and P. Tadi´ c,The complex life of hydrodynamic modes,JHEP11(2019) 097 [1904.12862]

  50. [51]

    Abbasi and K

    N. Abbasi and K. Landsteiner,Pole-skipping as order parameter to probe a quantum critical point,JHEP09(2023) 169 [2307.16716]

  51. [52]

    Lin and H.-U

    S. Lin and H.-U. Yee,Out-of-Equilibrium Chiral Magnetic Effect at Strong Coupling,Phys. Rev. D88(2013) 025030 [1305.3949]

  52. [53]

    Gynther, K

    A. Gynther, K. Landsteiner, F. Pena-Benitez and A. Rebhan,Holographic Anomalous Conductivities and the Chiral Magnetic Effect,JHEP02(2011) 110 [1005.2587]

  53. [54]

    Amado, K

    I. Amado, K. Landsteiner and F. Pena-Benitez,Anomalous transport coefficients from Kubo formulas in Holography,JHEP05(2011) 081 [1102.4577]

  54. [55]

    Gursoy and J

    U. Gursoy and J. Tarrio,Horizon universality and anomalous conductivities,JHEP10 (2015) 058 [1410.1306]

  55. [56]

    G¨ ursoy and A

    U. G¨ ursoy and A. Jansen,(Non)renormalization of Anomalous Conductivities and Holography,JHEP10(2014) 092 [1407.3282]

  56. [57]

    Grozdanov and N

    S. Grozdanov and N. Poovuttikul,Universality of anomalous conductivities in theories with higher-derivative holographic duals,JHEP09(2016) 046 [1603.08770]

  57. [58]

    Baggioli, Y

    M. Baggioli, Y. Bu and X. Sun,Chiral anomalous magnetohydrodynamics in action: effective field theory and holography,JHEP04(2025) 126 [2412.02361]

  58. [59]

    Ammon, S

    M. Ammon, S. Grieninger, J. Hernandez, M. Kaminski, R. Koirala, J. Leiber et al.,Chiral hydrodynamics in strong external magnetic fields,JHEP04(2021) 078 [2012.09183]

  59. [60]

    Demircik, D

    T. Demircik, D. Gallegos, U. G¨ ursoy, M. J¨ arvinen and R. Lier,Holographic transport in anisotropic plasmas,Phys. Rev. D110(2024) 066007 [2402.12224]

  60. [61]

    Matsuo, S.-J

    Y. Matsuo, S.-J. Sin, S. Takeuchi and T. Tsukioka,Magnetic conductivity and Chern-Simons Term in Holographic Hydrodynamics of Charged AdS Black Hole,JHEP04(2010) 071 [0910.3722]

  61. [62]

    Taylor,More on counterterms in the gravitational action and anomalies, hep-th/0002125

    M. Taylor,More on counterterms in the gravitational action and anomalies, hep-th/0002125

  62. [63]

    Sahoo and H.-U

    B. Sahoo and H.-U. Yee,Electrified plasma in AdS/CFT correspondence,JHEP11(2010) 095 [1004.3541]

  63. [64]

    Landau and E.M

    L.D. Landau and E.M. Lifshitz,Fluid Mechanics: Volume 6, vol. 6, Elsevier (1987)

  64. [65]

    Horowitz and M.M

    G.T. Horowitz and M.M. Roberts,Holographic Superconductors with Various Condensates, Phys. Rev. D78(2008) 126008 [0810.1077]

  65. [66]

    Haack, D

    M. Haack, D. Sarkar and A. Yarom,Probing anomalous driving,JHEP04(2019) 034 [1812.08210]

  66. [67]

    Waeber and A

    S. Waeber and A. Yarom,Long lived quasi normal modes,2411.18039

  67. [68]

    Z. Qiu, G. Cao and X.-G. Huang,On electrodynamics of chiral matter,Phys. Rev. D95 (2017) 036002 [1612.06364]. – 34 –

  68. [69]

    Trefethen,Spectral methods in MATLAB, SIAM (2000)

    L.N. Trefethen,Spectral methods in MATLAB, SIAM (2000)

  69. [70]

    Driscoll, N

    T.A. Driscoll, N. Hale and L.N. Trefethen,Chebfun guide, 2014

  70. [71]

    Boyd,Chebyshev and Fourier spectral methods, Courier Corporation (2001)

    J.P. Boyd,Chebyshev and Fourier spectral methods, Courier Corporation (2001). – 35 –