{"total":14,"items":[{"citing_arxiv_id":"2605.21456","ref_index":65,"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":"109, 103522 (2024), 2402.05908. [63] Ö. Akarsu, L. Perivolaropoulos, A. Tsikoundoura, A. E. Yükselci, and A. Zhuk, Dynamical dark energy with AdS-to-dS and dS-to-dS transitions: Implications for the H0 tension (2025), 2502.14667. [64] L. Verde, T. Treu, and A. G. Riess, Tensions between the Early and the Late Universe, Nature Astron.3, 891 (2019), 1907.10625. [65] E. Di Valentinoet al., Snowmass2021 - Letter of interest cosmology intertwined II: The hubble constant tension, Astropart. Phys.131, 102605 (2021), 2008.11284. [66] E. Di Valentino, O. Mena, S. Pan, L. Visinelli, W. Yang, A. Melchiorri, D. F. Mota, A. G. Riess, and J. Silk, In the realm of the Hubble tension-a review of solutions, Class. Quant. Grav."},{"citing_arxiv_id":"2605.06147","ref_index":12,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Cosmological Dynamics of a Non-Canonical Generalised Brans-Dicke Theory","primary_cat":"gr-qc","submitted_at":"2026-05-07T12:41:16+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"A non-canonical generalized Brans-Dicke theory admits background cosmological solutions matching Lambda CDM characteristics for constant, power-law, and exponential potentials, with dynamics distinct from other scalar-tensor models.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":", Snowmass2021 - Letter of in- terest cosmology intertwined I: Perspectives for the next decade, Astropart. Phys.131, 102606 (2021), arXiv:2008.11283 [astro-ph.CO]. [11] E. Di Valentinoet al., Snowmass2021 - Letter of interest cosmology intertwined II: The hubble constant tension, Astropart. Phys.131, 102605 (2021), arXiv:2008.11284 [astro-ph.CO]. [12] E. Di Valentinoet al., Snowmass2021 - Letter of inter- est cosmology intertwined IV: The age of the universe and its curvature, Astropart. Phys.131, 102607 (2021), arXiv:2008.11286 [astro-ph.CO]. [13] E. N. Saridakis, R. Lazkoz, V. Salzano, P. Vargas Mo- niz, S. Capozziello, J. Beltr' an Jim' enez, M. De Laurentis, and G. J. Olmo, eds.,Modified Gravity and Cosmology."},{"citing_arxiv_id":"2604.28013","ref_index":9,"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":"The standardΛCDM model [1] has achieved remarkable success in describing the observed Universeacrossawiderangeofscalesandepochs[2]. Nevertheless,severalpersistentdiscrepancies have raised the possibility that this concordance framework is incomplete [3]. Among them, the Hubble tension [4-8] remains the most prominent: local distance-ladder measurements calibrated by SH0ES [9] favor a significantly higher value of the Hubble constant𝐻0 than that inferred from Planck CMB data underΛCDM [10]. This discrepancy [11-19] has motivated a large literature on early-timenewphysics[20-25],late-timenewphysics[26-32],andunresolvedsystematics[33-36]. A useful way to sharpen this discussion is to distinguish different projections of the Hubble"},{"citing_arxiv_id":"2604.18053","ref_index":18,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"A barotropic alternative to Early Dark Energy for alleviating the $H_0$ tension","primary_cat":"astro-ph.CO","submitted_at":"2026-04-20T10:22:05+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"A barotropic fluid with ω_s ≈ 0.29 and Ω_s ≈ 1.5×10^{-5} raises the inferred H0 to match SH0ES while remaining consistent with Planck CMB, DESI BAO, and Pantheon data.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Riess, Nature Astron.3, 891 (2019), 1907.10625. [15] E. Di Valentino et al., Astropart. Phys.131, 102605 (2021), 2008.11284. [16] E. Di Valentino et al., Astropart. Phys.131, 102604 (2021), 2008.11285. [17] N. Sch¨ oneberg, G. Franco Abell' an, A. P' erez S' anchez, S. J. Witte, V. Poulin, and J. Lesgourgues, Phys. Rept. 984, 1 (2022), 2107.10291. [18] V. Poulin, J. L. Bernal, E. D. Kovetz, and M. Kamionkowski, Phys. Rev. D107, 123538 (2023), 2209.06217. [19] E. Abdalla et al., JHEAp34, 49 (2022), 2203.06142. [20] E. Di Valentino et al. (CosmoVerse Network), Phys. Dark Univ.49, 101965 (2025), 2504.01669. [21] K. S. Dawson et al. (BOSS), Astron. J.145, 10 (2013), 1208.0022. [22] A. G. Adame et al."},{"citing_arxiv_id":"2604.13535","ref_index":2,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Double the axions, half the tension: multi-field early dark energy eases the Hubble tension","primary_cat":"astro-ph.CO","submitted_at":"2026-04-15T06:29:12+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Two-field axion-like early dark energy reduces Hubble tension to 1.5 sigma residual and improves high-ell CMB fits over single-field models.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"χ2(ΛCDM) for each CMB multipole bin, assuming a width ∆ℓ= 100. We compare the best-fit 2-axion model fit to PDH0 (H 0 = 72.97 km/s/Mpc) and a nearby 1-axion pro- file likelihood point (H 0 = 72.99 km/s/Mpc), against the best-fit ΛCDM model fit to the PD combination (H 0 = 68.10 km/s/Mpc). 13 [1] L. Verde, T. Treu, and A. G. Riess, Nature Astron.3, 891 (2019), arXiv:1907.10625 [astro-ph.CO]. [2] E. Di Valentinoet al., Astropart. Phys.131, 102605 (2021), arXiv:2008.11284 [astro-ph.CO]. [3] E. Di Valentino, O. Mena, S. Pan, L. Visinelli, W. Yang, A. Melchiorri, D. F. Mota, A. G. Riess, and J. Silk, Class. Quant. Grav.38, 153001 (2021), arXiv:2103.01183 [astro-ph.CO]. [4] L. Perivolaropoulos and F. Skara, New Astron. Rev.95, 101659 (2022), arXiv:2105."},{"citing_arxiv_id":"2604.12987","ref_index":22,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Do equation of state parametrizations of dark energy faithfully capture the dynamics of the late universe?","primary_cat":"astro-ph.CO","submitted_at":"2026-04-14T17:22:34+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Node-based reconstruction of cosmic expansion prefers stronger deceleration at z≈1.7 than smooth DE EoS parametrizations, isolating z~1.5-2 as a window where the latter may compress localized kinematic features permitted by current data.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"19441 [astro-ph.CO]. [20] B. Popovicet al.(DES), The Dark Energy Survey Su- pernova Program: A Reanalysis Of Cosmology Re- sults And Evidence For Evolving Dark Energy With An Updated Type Ia Supernova Calibration (2025), arXiv:2511.07517 [astro-ph.CO]. [21] L. Verde, T. Treu, and A. G. Riess, Nature Astron.3, 891 (2019), arXiv:1907.10625 [astro-ph.CO]. [22] E. Di Valentinoet al., Astropart. Phys.131, 102605 (2021), arXiv:2008.11284 [astro-ph.CO]. [23] E. Di Valentino, O. Mena, S. Pan, L. Visinelli, W. Yang, A. Melchiorri, D. F. Mota, A. G. Riess, and J. Silk, Class. Quant. Grav.38, 153001 (2021), arXiv:2103.01183 [astro-ph.CO]. [24] L. Perivolaropoulos and F. Skara, New Astron. Rev.95, 101659 (2022), arXiv:2105."},{"citing_arxiv_id":"2603.10787","ref_index":11,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Measuring neutrino mass in light of ACT DR6 and DESI DR2","primary_cat":"astro-ph.CO","submitted_at":"2026-03-11T14:00:06+00:00","verdict":"UNVERDICTED","verdict_confidence":"MODERATE","novelty_score":5.0,"formal_verification":"none","one_line_summary":"New ACT and DESI data yield model-dependent upper limits on sum of neutrino masses, with holographic dark energy giving the tightest bounds and a consistent preference for degenerate hierarchy.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"[7] S. Vagnozzi, Phys. Rev. D 102, 023518 (2020), arXiv:1907.07569 [astro-ph.CO]. [8] S. Vagnozzi, Universe 9, 393 (2023), arXiv:2308.16628 [astro- ph.CO]. [9] S. Vagnozzi, F. Pacucci, and A. Loeb, JHEAp 36, 27 (2022), arXiv:2105.10421 [astro-ph.CO]. [10] L. Verde, T. Treu, and A. G. Riess, Nature Astron. 3, 891 (2019), arXiv:1907.10625 [astro-ph.CO]. [11] E. Di Valentino et al. , Astropart. Phys. 131, 102605 (2021), arXiv:2008.11284 [astro-ph.CO]. [12] E. Di Valentino et al. , Astropart. Phys. 131, 102604 (2021), arXiv:2008.11285 [astro-ph.CO]. [13] E. Di Valentino, O. Mena, S. Pan, L. Visinelli, W. Yang, A. Melchiorri, D. F. Mota, A. G. Riess, and J. Silk, Class. Quant. Grav. 38, 153001 (2021), arXiv:2103."},{"citing_arxiv_id":"2602.11936","ref_index":19,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Probing Dynamical Dark Energy with Late-Time Data: Evidence, Tensions, and the Limits of the $w_0w_a$CDM Framework","primary_cat":"astro-ph.CO","submitted_at":"2026-02-12T13:35:54+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Evidence for dynamical dark energy in the w0waCDM framework is strongly dataset-dependent, driven by mismatches in low-redshift BAO distance ratios that produce divergent expansion histories and inconsistent Hubble tension relief.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Yang, A. Melchiorri, D. F. Mota, A. G. Riess, and J. Silk, Class. Quant. Grav.38, 153001 (2021), arXiv:2103.01183 [astro-ph.CO]. [16] L. Perivolaropoulos and F. Skara, New Astron. Rev.95, 101659 (2022), arXiv:2105.05208 [astro-ph.CO]. [17] E. Abdallaet al., JHEAp34, 49 (2022), arXiv:2203.06142 [astro-ph.CO]. [18] E. Di Valentino, Universe8, 399 (2022). [19] A. R. Khalife, M. B. Zanjani, S. Galli, S. Gün- ther, J. Lesgourgues, and K. Benabed, JCAP04, 059, arXiv:2312.09814 [astro-ph.CO]. [20] S. Vagnozzi, Universe9, 393 (2023), arXiv:2308.16628 [astro-ph.CO]. [21] Ö. Akarsu, E. Ó. Colgáin, A. A. Sen, and M. M. Sheikh- Jabbari, Universe10, 305 (2024), arXiv:2402.04767 [astro-ph.CO]. [22] E. Di Valentinoet al."},{"citing_arxiv_id":"2602.03110","ref_index":12,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Evidence for deviation in gravitational light deflection from general relativity at cosmological scales with KiDS-Legacy and CMB lensing","primary_cat":"astro-ph.CO","submitted_at":"2026-02-03T05:11:50+00:00","verdict":"CONDITIONAL","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"KiDS-Legacy weak lensing plus CMB data yields a 3 sigma deviation in light deflection from GR in a Lambda CDM background, with the signal driven by large-scale CMB lensing amplitudes.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"4, 1 (2001), arXiv:astro- ph/0004075. [9] P. J. E. Peebles and B. Ratra, Rev. Mod. Phys.75, 559 (2003), arXiv:astro-ph/0207347. [10] N. Aghanimet al.(Planck), Astron. Astrophys.641, A6 (2020), [Erratum: Astron.Astrophys. 652, C4 (2021)], arXiv:1807.06209 [astro-ph.CO]. [11] E. Di Valentinoet al., Astropart. Phys.131, 102604 (2021), arXiv:2008.11285 [astro-ph.CO]. [12] E. Di Valentinoet al., Astropart. Phys.131, 102605 (2021), arXiv:2008.11284 [astro-ph.CO]. [13] E. Di Valentino, O. Mena, S. Pan, L. Visinelli, W. Yang, A. Melchiorri, D. F. Mota, A. G. Riess, and J. Silk, Class. Quant. Grav.38, 153001 (2021), arXiv:2103.01183 [astro-ph.CO]. [14] E. Di Valentino, Universe8, 399 (2022). [15] L. Verde, T. Treu, and A."},{"citing_arxiv_id":"2601.14222","ref_index":47,"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":"(2025), arXiv:2501.14509 [astro-ph.CO]. [44] Y. L. Bolotin, V. A. Cherkaskiy, M. I. Konchatnyi, S. Pan, and W. Yang, Int. J. Mod. Phys. D31, 2250036 (2022), arXiv:2008.09602 [gr-qc]. [45] L. Verde, T. Treu, and A. G. Riess, Nature Astron.3, 891 (2019), arXiv:1907.10625 [astro-ph.CO]. [46] S. Vagnozzi, Phys. Rev. D102, 023518 (2020), arXiv:1907.07569 [astro-ph.CO]. [47] E. Di Valentinoet al., Astropart. Phys.131, 102605 (2021), arXiv:2008.11284 [astro-ph.CO]. [48] E. Di Valentino, O. Mena, S. Pan, L. Visinelli, W. Yang, A. Melchiorri, D. F. Mota, A. G. Riess, and J. Silk, Class. Quant. Grav.38, 153001 (2021), arXiv:2103.01183 [astro-ph.CO]. 19 FIG. 9. Plot of the effective equation of state parameter of dark energyw eff"},{"citing_arxiv_id":"2510.18741","ref_index":10,"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":"2402.04767. [8] E. Di Valentinoet al.(CosmoVerse Network), The Cos- moVerseWhitePaper: Addressingobservationaltensions in cosmology with systematics and fundamental physics, Phys. Dark Univ.49, 101965 (2025), 2504.01669. [9] L. Verde, T. Treu, and A. G. Riess, Tensions between the Early and the Late Universe, Nature Astron.3, 891 (2019), 1907.10625. [10] E. Di Valentinoet al., Snowmass2021 - Letter of interest cosmology intertwined II: The hubble constant tension, Astropart. Phys.131, 102605 (2021), 2008.11284. [11] E. Di Valentino, O. Mena, S. Pan, L. Visinelli, W. Yang, A. Melchiorri, D. F. Mota, A. G. Riess, and J. Silk, In the realm of the Hubble tension-a review of solutions, Class. Quant. Grav."},{"citing_arxiv_id":"2509.02646","ref_index":21,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Gauge invariant perturbations of $F(T,T_G)$ Cosmology","primary_cat":"gr-qc","submitted_at":"2025-09-02T10:58:37+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Derives gauge-invariant perturbation equations for F(T, T_G) cosmology and provides physical interpretations for new contributions in each mode.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2506.13812","ref_index":50,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Late-Time Cosmic Acceleration from QCD Confinement Dynamics","primary_cat":"physics.gen-ph","submitted_at":"2025-06-14T12:21:39+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Phenomenological extension of the PNJL model introduces a curvature-sensitive term proportional to (H/H0)^d that behaves as effective dark energy at late times and fits low-redshift data competitively with ΛCDM.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2402.07716","ref_index":5,"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":"131, 102605 (2021), 2008.11284. [3] E. Di Valentino, O. Mena, S. Pan, L. Visinelli, W. Yang, A. 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. [4] L. Perivolaropoulos and F. Skara, Challenges for ΛCDM: An update, New Astron. Rev. 95, 101659 (2022), 2105.05208. [5] N. Sch¨ oneberg, G. Franco Abell' an, A. P' erez S' anchez, S. J. Witte, V. Poulin, and J. Lesgourgues, The H0 Olympics: A fair ranking of proposed models, Phys. Rept. 984, 1 (2022), 2107.10291. [6] P. Shah, P. Lemos, and O. Lahav, A buyer's guide to the Hubble constant, Astron. Astrophys. Rev. 29, 9 (2021), 2109.01161. [7] E. Abdalla et al., Cosmology intertwined: A review of the"}],"limit":50,"offset":0}