{"id":"f5d8f8dc-b143-4d78-a4a4-ea9c543cf170","arxiv_id":"2508.08598","paper_version":1,"verdict":"UNVERDICTED","confidence":"LOW","novelty_score":5.0,"correctness_risk":"unknown","formal_verification":"none","parameter_count":0,"one_line_summary":"Correlation effects in YPtBi and GdPtBi are claimed to renormalize topological bands and produce a temperature-induced Lifshitz transition that explains large ARPES-observed hole pockets.","lead":"This preprint's abstract claims that electron correlations create holes and a temperature-driven Lifshitz transition in the topological semimetals YPtBi and GdPtBi. The full text supplied for review is an unrelated video-generation paper, so only the abstract could be considered.","discovery_kind":"unclear","skeptic_critique":{"model":"deepseek-v4-flash","headline":"No scientific objection can be tested: the submitted full text is an unrelated video-generation paper, so the abstract's GW+DMFT evidence for hole pockets and Lifshitz transitions is absent.","rationale":"The reader's weakest assumption, that the GW+DMFT treatment is quantitatively accurate enough to place the Fermi level, points to the same required condition I identify. However, my concern is more basic: the submitted full text is an unrelated paper, so the accuracy of the self-energy and temperature-dependent chemical potential cannot be checked at all. This is not an objection to the physics but a verification barrier. The abstract itself is coherent and physically plausible; the central claim is falsifiable in principle through a temperature-dependent GW+DMFT calculation. Because no such calculation is present in the submitted artifact, the correct scientific posture is to leave the verdict unverified. I therefore recommend no change to the reader's UNVERDICTED outcome, while noting that a meaningful stress-test requires retrieval of the actual manuscript.","tokens_in":1397,"tokens_out":2714,"duration_ms":31931,"concrete_test":"Retrieve the correct YPtBi/GdPtBi manuscript (via author or arXiv metadata), then independently recompute the low-temperature electronic structure with the reported U, J, double-counting correction, and impurity solver. If the hole pocket forms only for a narrow choice of interaction parameters or impurity solver (for example, U within ±1 eV of a fixed value), the predicted temperature-induced Lifshitz transition is not robust. If the correct manuscript cannot be retrieved, the central claim remains unverified and the verdict should stay UNVERDICTED.","verdict_should_be":"UNCHANGED","load_bearing_attack":"The abstract's central claim requires a quantitatively reliable, temperature-resolved GW+DMFT solution that places the chemical potential relative to the quadratic-band-touching point. The most load-bearing condition is that correlation-induced renormalization of the Y-4d or Gd-4f states is accurate enough to move the Fermi level across the band-touching point as temperature changes. The full text under arXiv:2508.08598 is the unrelated video-generation manuscript 2508.08601v3; it contains no methods, equations, interaction parameters, self-energy construction, impurity solver details, or results for YPtBi/GdPtBi. In good faith, the physics may be correct, but there is no internally checkable argument: the central premise, that the computed self-energy and chemical potential are quantitatively trustworthy in the relevant temperature window, cannot be examined from the submitted artifact. This is a verification failure rather than a demonstrated scientific flaw, so the claim should remain unverified rather than accepted or rejected.","agreement_with_reader":"partial"},"referee_report":{"model":"deepseek-v4-flash","summary":"The manuscript, identified as arXiv:2508.08598 (cond-mat.str-el), claims to study the correlated topological semimetals YPtBi and GdPtBi using ab initio GW plus dynamical mean-field theory. The abstract asserts that correlation effects of 4d (Y) or 4f (Gd) electrons generate hole carriers, leading to a temperature-induced Lifshitz transition that explains the large hole bands seen in low-temperature ARPES measurements. However, the full text supplied with the submission is an unrelated manuscript on interactive video generation, titled \"Yan: Foundational Interactive Video Generation,\" which contains no equations, methods, data, or discussion of YPtBi, GdPtBi, GW, DMFT, or Lifshitz transitions. The only scientific content is the abstract itself.","tokens_in":1554,"tokens_out":1893,"duration_ms":21148,"significance":"If the claimed result holds, it would provide a concrete mechanism for carrier sign reversal and a temperature-driven Lifshitz transition in half-Heusler topological semimetals, offering an explanation for previously puzzling ARPES observations and pointing to correlations as a design handle for Fermi-surface topology. The claimed integration of GW+DMFT to capture both weakly correlated 4d and strongly correlated 4f electrons is methodologically ambitious and, if quantitatively validated, would be a notable advance. However, because the submitted artifact provides no computational details, no error estimates, and no comparison with experiment beyond a qualitative statement, the significance cannot currently be assessed beyond the abstract's assertion. The paper ships no machine-checked proofs, no reproducible code, and no parameter-free derivations.","major_comments":[{"comment":"The full text of this submission is the unrelated manuscript \"Yan: Foundational Interactive Video Generation\" (apparently arXiv:2508.08601v3), which contains no mention of YPtBi, GdPtBi, GW, DMFT, topological semimetals, Lifshitz transitions, or ARPES. There is therefore no methods section, no Hamiltonian, no self-energy construction, no interaction parameters, no impurity solver details, and no results that could support the abstract's central claim. This is a verification failure: the scientific argument is entirely absent from the submitted artifact.","section":"Full text (entire submission)"},{"comment":"The central claim that correlated Y-4d or Gd-4f electrons produce hole pockets and a temperature-induced Lifshitz transition is stated without any quantitative support. The abstract gives no equations, no band-structure data, no spectral functions, no temperature-dependent self-energy, and no values for U or J, so it is impossible to check whether the predicted Fermi-level shift relative to the quadratic-band-touching point is a robust result or an artifact of the chosen parameters. The load-bearing premise that the GW+DMFT self-energy is quantitatively accurate in the relevant temperature window is asserted but not demonstrated.","section":"Abstract"},{"comment":"The abstract claims that in YPtBi \"at low temperatures, enhanced correlations of Y-4d renormalize the topological bands\" and that in GdPtBi the chemical potential moves closer to the quadratic-band-touching points as temperature is lowered. No description is given of how the temperature dependence enters the calculation (e.g., through the Matsubara grid, the impurity solver, or the self-energy construction), nor is any comparison with temperature-resolved ARPES shown. Thus the central \"temperature-induced\" character of the Lifshitz transition is not supported by any presented evidence.","section":"Abstract (temperature dependence)"}],"minor_comments":[{"comment":"The phrase \"the Hubbard-like bands originate from self-energy effects\" is grammatically incomplete; it likely intends \"the Hubbard-like bands originate from self-energy effects associated with a topological singularity.\" Proofreading of this sentence would improve readability, though this is a presentation issue rather than a substantive one.","section":"Abstract, sentence about GdPtBi"}],"recommendation":"uncertain","confidential_remarks":"The submitted full text is a completely different paper (a video-generation manuscript). This is either a submission error or a metadata mismatch. The editor should verify the correct manuscript for arXiv:2508.08598 before any further evaluation. The abstract alone is insufficient to judge the science, and I am unable to verify any of the claimed results; a proper resubmission with the actual paper would be needed for a fair review."},"author_rebuttal":null,"desk_editor":{"model":"deepseek-v4-flash","letter":"The abstract describes a plausible and specific mechanism, but the submitted full text is an unrelated video-generation paper, so there is nothing here to review scientifically.\n\nWhat's genuinely interesting is the scenario itself: in YPtBi, weakly correlated Y-4d electrons form the topological bands, and the claim is that their correlations strengthen as temperature drops, renormalizing the bands and creating a hole pocket. In GdPtBi, strongly correlated Gd-4f electrons are argued to form Hubbard-like bands that hybridize with the topological bands, also producing pronounced hole bands. That is a concrete, testable picture, and it speaks to a real unresolved discrepancy between calculated and ARPES-observed hole bands in half-Heusler topological semimetals. If the GW+DMFT calculation is done carefully, this could be an important contribution.\n\nThe soft spots are unavoidable. There is no full text: the PDF under arXiv:2508.08598 is 2508.08601v3, a paper on interactive video generation. No equations, interaction parameters, impurity-solver details, temperature-dependent self-energy, or comparisons to ARPES are available. The central claim requires the self-energy and chemical potential to be quantitatively accurate enough to move the Fermi level across the quadratic-band-touching point as temperature changes; nothing in the abstract allows that to be checked. There is also an inherent circularity risk because the mechanism is invoked to explain already-observed bands, but that is a risk, not evidence of tuning.\n\nMy recommendation: this should be desk-rejected on technical grounds. The authors need to resubmit with the actual manuscript attached. If the text matches the abstract, then it deserves serious refereeing; the physics is plausible and the materials are of genuine interest.","headline":"Plausible physics, but the wrong full text makes this unverifiable as submitted.","tokens_in":2072,"tokens_out":2549,"would_cite":false,"duration_ms":25804,"reading_group":"no","serious_thinker":"unclear","would_accept_peer_review":false},"rs_alignment":null,"lean_confirmation":null,"pith_extraction":{"msc":[],"pacs":[],"model":"deepseek-v4-flash","headline":"Electron correlations in YPtBi and GdPtBi create hole carriers and a temperature-driven Lifshitz transition.","keywords":["Lifshitz transition","topological semimetal","half-Heusler compound","electron correlation","GW approximation","dynamical mean-field theory","hole pocket","angle-resolved photoemission"],"falsifier":"Measure the Fermi surface of YPtBi (or GdPtBi) by angle-resolved photoemission from high temperature down to the temperature where the calculation predicts the hole pocket to appear: if the hole pocket never appears, or appears only at high instead of low temperature, the correlation-driven transition is not there.","tokens_in":1209,"feed_emoji":"⚛️","tokens_out":7704,"duration_ms":70040,"temperature":0.7,"pith_summary":"This paper argues that electron–electron correlations, not just the non-interacting band structure, determine the Fermi-surface topology of the half-Heusler semimetals YPtBi and GdPtBi, and that this topology changes with temperature. In YPtBi the authors find that stronger low-temperature correlations in the Y-4d electrons renormalize the topological bands and create a hole pocket, pulling the chemical potential away from the quadratic-band-touching point. In GdPtBi, strongly correlated Gd-4f electrons form Hubbard-like local bands that hybridize with the topological bands, producing pronounced hole bands; cooling then reduces hole doping and moves the chemical potential back toward the touching point. The authors propose that this temperature-induced Lifshitz transition—a change in the connectivity of the Fermi surface—explains the large low-temperature hole bands observed in angle-resolved photoemission. If correct, the result shows that correlated fermions can be used to tune the energy landscape of topological bands, which is relevant for devices based on topological quasiparticles.","feed_headline":"Correlations drive Fermi-surface change in YPtBi and GdPtBi","feed_subtitle":"Cooling strengthens electron correlations, creating hole pockets that explain the low-temperature ARPES data.","key_machinery":"The carrying machinery is the temperature-dependent self-energy of the correlated $4d$ (YPtBi) and $4f$ (GdPtBi) electrons, obtained from a combination of ab initio GW theory (a many-body perturbation method where the self-energy is the product of the Green's function and the screened interaction) and dynamical mean-field theory, which embeds each correlated orbital in a self-consistent bath. In YPtBi this self-energy renormalizes the topological bands enough to open a hole pocket; in GdPtBi it produces Hubbard-like local bands associated with a topological singularity in the self-energy, which hybridize with the topological bands. The temperature dependence of this self-energy is what moves the chemical potential relative to the quadratic-band-touching point and drives the Lifshitz transition.","core_discovery":"The central claim is that electron-correlation effects in YPtBi and GdPtBi generate hole carriers and a temperature-dependent Lifshitz transition. In YPtBi, the quadratic-band-touching point sits at the Fermi level at high temperature, but enhanced correlations of the Y-4d electrons at low temperature renormalize the topological bands and form a hole pocket. In GdPtBi, the strongly correlated Gd-4f electrons produce Hubbard-like bands that originate from self-energy effects associated with a topological singularity; these local bands hybridize with the itinerant 4f and topological bands to create pronounced hole bands, and cooling moves the chemical potential closer to the quadratic-band-touching point. The temperature-induced Lifshitz transition is put forward as the reason large hole bands appear in low-temperature angle-resolved photoemission measurements of both materials.","pith_inferences":["If the same correlation mechanism operates in other half-Heusler or rare-earth topological semimetals, those materials should also show temperature-dependent Fermi-surface reconstruction, a testable prediction beyond the two compounds studied.","Because the hole-pocket formation is tied to the $4d/4f$ self-energy, alloying or pressure that shifts these levels or the screening strength could move the Lifshitz-transition temperature, giving a way to engineer the transition.","The paper's claim implies that even weakly correlated bands (Y-4d) can have strong enough temperature-dependent renormalization to change Fermi-surface topology, so other 'weakly correlated' topological materials may host similar transitions that non-interacting band theory would miss.","The supplied full-text section appears to be a different manuscript, so this extraction relies on the abstract alone; the quantitative details needed to test the claim (interaction parameters, impurity solver, convergence) are not in the available text."],"forward_implications":["In YPtBi, the Fermi surface at low temperature should contain a hole pocket centered at the quadratic-band-touching point that disappears at higher temperature.","In GdPtBi, cooling should reduce the hole doping, bringing the chemical potential closer to the quadratic-band-touching point.","The large hole bands seen in low-temperature angle-resolved photoemission of YPtBi and GdPtBi are accounted for by the correlation-driven, temperature-induced Lifshitz transition rather than by band-structure effects alone.","Temperature-dependent measurements of the Fermi-surface topology, such as quantum oscillations or transport coefficients, should show a signature of the same Lifshitz transition.","The results identify electron correlations as a handle for tuning the topological band structure, since changing temperature (or correlation strength) moves the Fermi level relative to the topological crossing."],"supporting_citations":[],"fun_headline_variants":["Correlations cause Lifshitz transition in YPtBi and GdPtBi","Cooling shifts Fermi surface in YPtBi and GdPtBi","Temperature-driven Lifshitz transition emerges from electron correlations","Hole pockets from correlations reshape Fermi surface at low T","Electron correlations drive Lifshitz transition in topological semimetals"],"cache_read_input_tokens":3200,"weakest_assumption_plain":"The whole picture rests on the GW+DMFT calculation placing the Fermi level at the right distance from the band-crossing point at each temperature; if the computed self-energy is wrong by even a small amount, the predicted hole pockets and the transition would not exist.","fun_headline_variants_meta":{"raw":{"variants":["Correlations cause Lifshitz transition in YPtBi and GdPtBi","Cooling shifts Fermi surface in YPtBi and GdPtBi","Temperature-driven Lifshitz transition emerges from electron correlations","Hole pockets from correlations reshape Fermi surface at low T","Electron correlations drive Lifshitz transition in topological semimetals"]},"model":"deepseek-v4-flash","effort":"low","cost_usd":0.000552,"raw_usage":{"total_tokens":2668,"prompt_tokens":1015,"completion_tokens":1653,"prompt_tokens_details":{"cached_tokens":384},"prompt_cache_hit_tokens":384,"prompt_cache_miss_tokens":631,"completion_tokens_details":{"reasoning_tokens":1565}},"tokens_in":631,"tokens_out":1653,"duration_ms":12915,"temperature":1.0,"reasoning_tokens":1565,"cache_read_input_tokens":384,"cache_creation_input_tokens":0},"cache_creation_input_tokens":0},"created_at":"2026-08-15T17:34:25.736611+00:00","model_set":{"reader":"deepseek-v4-flash"},"falsifier":"Measure the Fermi surface of YPtBi (or GdPtBi) by angle-resolved photoemission from high temperature down to the temperature where the calculation predicts the hole pocket to appear: if the hole pocket never appears, or appears only at high instead of low temperature, the correlation-driven transition is not there.","supporting_citations":[],"review_version":2}