{"total":11,"items":[{"citing_arxiv_id":"2605.21456","ref_index":69,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Negative neutrino mass or negative dark energy?","primary_cat":"astro-ph.CO","submitted_at":"2026-05-20T17:46:56+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"A sign-switching dark energy model (Λ_s CDM) recovers positive effective neutrino masses (0.055 ± 0.050 eV) consistent with oscillation data, unlike ΛCDM which prefers negative values (-0.075 eV), for DESI DR2 + CMB + supernova fits with z_† > 2.4.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Quant. Grav.38, 153001 (2021), 2103.01183. [67] L. Perivolaropoulos and F. Skara, Challenges forΛCDM: An update, New Astron. Rev.95, 101659 (2022), 2105.05208. [68] N. Schöneberg, G. Franco Abellán, A. Pérez Sánchez, S. J. Witte, V. Poulin, and J. 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Di Valentino, Challenges of the Standard Cosmologi-"},{"citing_arxiv_id":"2604.28013","ref_index":12,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Cosmological intercept tension","primary_cat":"astro-ph.CO","submitted_at":"2026-04-30T15:31:57+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Tensions in the supernova intercept a_B at z~0.01 in PantheonPlus and z~0.1 in DES-Y5 point to data systematics or inter-survey inconsistencies rather than new physics, aligning H0 measurements and reducing support for dynamical dark energy.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Team,Astrophys. J. Lett.934(2022) L7, [2112.04510]. [10]Planckcollaboration, N. Aghanim et al.,Planck 2018 results. VI. Cosmological parameters,Astron. Astrophys.641(2020) A6, [1807.06209]. [11] E. Di Valentino et al.,Snowmass2021 - Letter of interest cosmology intertwined II: The hubble constant tension,Astropart. Phys.131(2021) 102605, [2008.11284]. [12] E. Di Valentino, O. Mena, S. Pan, L. Visinelli, W. Yang, A. Melchiorri et al.,In the realm of the Hubble tension-a review of solutions,Class. Quant. Grav.38(2021) 153001, [2103.01183]. [13] N. Schöneberg, G. Franco Abellán, A. Pérez Sánchez, S. J. Witte, V. Poulin and J. Lesgourgues,The H0 Olympics: A fair ranking of proposed models,Phys. Rept.984"},{"citing_arxiv_id":"2604.25813","ref_index":6,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Geometric Constraints on the Pre-Recombination Expansion History from the Hubble Tension","primary_cat":"astro-ph.CO","submitted_at":"2026-04-28T16:22:13+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Model-independent reconstruction shows that early-universe modifications resolving the Hubble tension exist at the background level, requiring a smooth ~15% pre-recombination expansion rate enhancement.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"38, 153001 (2021), arXiv:2103.01183 [astro-ph.CO]. [3] E. Di Valentinoet al., Astropart. Phys.131, 102604 (2021), arXiv:2008.11285 [astro-ph.CO]. 6 [4] L. Perivolaropoulos and F. Skara, New Astron. Rev.95, 101659 (2022), arXiv:2105.05208 [astro-ph.CO]. [5] P. Shah, P. Lemos, and O. 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Rev.95, 101659 (2022), arXiv:2105.05208 [astro-ph.CO]. [5] P. Shah, P. Lemos, and O. Lahav, Astron. Astrophys. Rev.29, 9 (2021), arXiv:2109.01161 [astro-ph.CO]. [6] E. Abdallaet al., JHEAp34, 49 (2022), arXiv:2203.06142 [astro-ph.CO]. [7] E. Di Valentino, Universe8, 399 (2022). [8] J.-P. Hu and F.-Y. Wang, Universe9, 94 (2023), arXiv:2302.05709 [astro-ph.CO]. [9] L. Verde, N. Sch¨ oneberg, and H. Gil-Mar' ın, Ann."},{"citing_arxiv_id":"2604.04408","ref_index":33,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Probing cosmic anisotropy with galaxy clusters and supernovae","primary_cat":"astro-ph.CO","submitted_at":"2026-04-06T04:19:03+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"Analysis of galaxy cluster and supernova data reveals a ~2σ directional variation in the Hubble constant, robust across calibration methods and aligned with the CMB dipole.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Weinberg, Gravitation and Cosmology: Principles and Applications of the General Theory of Relativity (1972). [30] S. Bethapudi and S. Desai, European Physical Journal Plus 132, 78 (2017), 1701.01789. [31] L. Verde, T. Treu, and A. G. Riess, Nature Astronomy3, 891 (2019), 1907.10625. [32] P. Shah, P. Lemos, and O. 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De Somma, Universe 10, 140 (2024), 2403."},{"citing_arxiv_id":"2602.11093","ref_index":20,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"New constraints on cosmic anisotropy from galaxy clusters using an improved dipole fitting method","primary_cat":"astro-ph.CO","submitted_at":"2026-02-11T18:01:44+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Galaxy cluster observations yield two preferred directions with cosmic anisotropy amplitude of about 5.3 times 10 to the minus 4 at roughly 1 sigma overall significance, though higher in the XMM-Newton subsample.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Astronomy 3 (2019) 891 [ 1907.10625]. [18] A.G. Riess, The expansion of the Universe is faster than expected , Nature Reviews Physics 2 (2020) 10 [ 2001.03624]. [19] E. Di Valentino, O. Mena, S. Pan, L. Visinelli, W. Yang, A. Melchiorri et al., In the realm of the Hubble tension-a review of solutions , Classical and Quantum Gravity 38 (2021) 153001 [2103.01183]. [20] P. Shah, P. Lemos and O. Lahav, A buyer's guide to the Hubble constant , A&A Revie 29 (2021) 9 [ 2109.01161]. [21] L. Perivolaropoulos and F. Skara, Challenges for ΛCDM: An update, New Astron. Rev. 95 (2022) 101659 [ 2105.05208]. [22] J.-P. Hu and F.-Y. Wang, Hubble Tension: The Evidence of New Physics , Universe 9 (2023) 94 [2302.05709]. [23] P. Kumar Aluri, P."},{"citing_arxiv_id":"2601.14222","ref_index":51,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Revisiting the Matter Creation Process: Observational Constraints on Gravitationally Induced Dark Energy and the Hubble Tension","primary_cat":"astro-ph.CO","submitted_at":"2026-01-20T18:32:34+00:00","verdict":"CONDITIONAL","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Gravitationally induced particle creation models fit cosmological data as well as ΛCDM and reduce the Hubble tension from 4.3σ to 2.4–3σ.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"The grey curve indicates the cosmological constant scenario withw eff DE =−1. [49] L. Perivolaropoulos and F. Skara, New Astron. Rev.95, 101659 (2022), arXiv:2105.05208 [astro-ph.CO]. [50] N. Sch¨ oneberg, G. Franco Abell' an, A. P' erez S' anchez, S. J. Witte, V. Poulin, and J. Lesgourgues, Phys. 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Giar` e, CMB Anomalies and the Hubble Tension"},{"citing_arxiv_id":"2510.18741","ref_index":13,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Nonlinear Matter Power Spectrum from relativistic $N$-body Simulations: $\\Lambda_{\\rm s}$CDM versus $\\Lambda$CDM","primary_cat":"astro-ph.CO","submitted_at":"2025-10-21T15:46:25+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Relativistic N-body simulations of Lambda_s CDM produce a redshift-dependent crest in the matter power spectrum ratio, peaking at 20-25% near the transition and leaving a 15-20% uplift at z=0 on group scales.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Melchiorri, D. F. Mota, A. G. Riess, and J. Silk, In the realm of the Hubble tension-a review of solutions, Class. Quant. Grav.38, 153001 (2021), 2103.01183. [12] N. Schöneberg, G. Franco Abellán, A. Pérez Sánchez, S. J. Witte, V. Poulin, and J. Lesgourgues, The H0 Olympics: A fair ranking of proposed models, Phys. Rept.984, 1 (2022), 2107.10291. [13] P. Shah, P. Lemos, and O. Lahav, A buyer's guide to the Hubble constant, Astron. Astrophys. Rev.29, 9 (2021), 2109.01161. [14] M. Kamionkowski and A. G. Riess, The Hubble Tension and Early Dark Energy, Ann. Rev. Nucl. Part. Sci.73, 153 (2023), 2211.04492. [15] W. Giarè, CMB Anomalies and the Hubble Tension (2023), 2305.16919. [16] J.-P. Hu and F.-Y."},{"citing_arxiv_id":"2402.07716","ref_index":9,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"$\\Lambda_{\\rm s}$CDM cosmology from a type-II minimally modified gravity","primary_cat":"astro-ph.CO","submitted_at":"2024-02-12T15:29:10+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Λ_s VCDM is a predictive model combining Λ_s CDM with VCDM gravity via an auxiliary scalar field and sigmoid-smoothed potentials to enable stable mirror AdS-to-dS transitions with possible transient acceleration.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Hubble constant, Astron. Astrophys. Rev. 29, 9 (2021), 2109.01161. [7] E. Abdalla et al., Cosmology intertwined: A review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies, JHEAp 34, 49 (2022), 2203.06142. [8] E. Di Valentino, Challenges of the Standard Cosmologi- cal Model, Universe 8, 399 (2022). [9] M. Kamionkowski and A. G. Riess, The Hubble Tension and Early Dark Energy, Ann. Rev. Nucl. Part. Sci. 73, 153 (2023), 2211.04492. [10] W. Giar` e, CMB Anomalies and the Hubble Tension (2023), 2305.16919. [11] J.-P. Hu and F.-Y. Wang, Hubble Tension: The Evidence of New Physics, Universe 9, 94 (2023), 2302.05709. 12 [12] L. Verde, N. Sch¨ oneberg, and H."},{"citing_arxiv_id":"2211.04492","ref_index":20,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"The Hubble Tension and Early Dark Energy","primary_cat":"astro-ph.CO","submitted_at":"2022-11-08T19:00:16+00:00","verdict":"UNVERDICTED","verdict_confidence":"MODERATE","novelty_score":2.0,"formal_verification":"none","one_line_summary":"The Hubble tension between local and early-universe expansion-rate measurements may be resolved by early dark energy that speeds up expansion before recombination while satisfying existing constraints.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2112.04510","ref_index":129,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team","primary_cat":"astro-ph.CO","submitted_at":"2021-12-08T19:00:02+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"The local Hubble constant is measured as 73.04 ± 1.04 km/s/Mpc from Cepheid-calibrated Type Ia supernovae, showing a 5-sigma discrepancy with the Planck+LCDM prediction.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null}],"limit":50,"offset":0}