{"total":19,"items":[{"citing_arxiv_id":"2606.28172","ref_index":9,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Searching for primordial features with radio surveys: synergy between the power spectrum and bispectrum","primary_cat":"astro-ph.CO","submitted_at":"2026-06-26T15:04:26+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Joint power spectrum and bispectrum analysis from future HI intensity mapping surveys improves constraints on primordial feature amplitudes by 30-40% and achieves percent-level precision on oscillation frequencies when combined with CMB measurements.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"[7] V.F. Mukhanov and G.V. Chibisov,Quantum fluctuations and a nonsingular universe,Soviet Journal of Experimental and Theoretical Physics Letters33(1981) 532. [8] J. Chluba, J. Hamann and S.P. Patil,Features and new physical scales in primordial observables: Theory and observation,International Journal of Modern Physics D24(2015) 1530023 [1505.01834]. [9] A. Achúcarro, M. Biagetti, M. Braglia, G. Cabass, R. Caldwell, E. Castorina et al.,Inflation: Theory and Observations,arXiv e-prints(2022) arXiv:2203.08128 [2203.08128]. [10] J.A. Adams, B. Cresswell and R. Easther,Inflationary perturbations from a potential with a step,Phys. Rev. D64(2001) 123514 [astro-ph/0102236]. [11] H.V. Peiris, E. Komatsu, L."},{"citing_arxiv_id":"2606.18491","ref_index":30,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"The Coherence Principle: A Falsifiable Prior for Model Selection from the Grammar of Theories","primary_cat":"astro-ph.CO","submitted_at":"2026-06-16T21:06:20+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"The Coherence Principle supplies a falsifiable prior for Bayesian model selection by converting compatibility with a theory's validated grammar into prior weights via a maximum-entropy exponential controlled by one parameter.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2606.18248","ref_index":5,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Pushing the Primordial Frontier: Exact Linear Solutions in Multifield Inflation","primary_cat":"astro-ph.CO","submitted_at":"2026-06-16T17:59:12+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Exact analytic solutions for coupled linear perturbations in two-field inflation provide a closed-form primordial power spectrum that interpolates weak, strong, light, and heavy field regimes.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2606.13514","ref_index":110,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Electroweak First-Order Phase Transition Triggered by Non-Gaussian Fluctuations of a $\\mathbb{Z}_2$-Symmetric Spectator Scalar","primary_cat":"hep-ph","submitted_at":"2026-06-11T16:00:51+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Non-Gaussian primordial fluctuations of a Z2-symmetric spectator scalar trigger a strong first-order electroweak phase transition, with the field serving as cold dark matter and generating a stochastic gravitational wave background in the 10^{-3}-10^{-1} Hz band.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2606.12549","ref_index":3,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Tachyonic Encore: A universal shift of inflationary observables","primary_cat":"hep-th","submitted_at":"2026-06-10T18:01:01+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"A light axion spectator induces post-inflation tachyonic phases that produce a nearly scale-invariant boost to the curvature power spectrum and alter key inflationary observables in a largely potential-independent manner.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2606.06282","ref_index":2,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"On Cosmological Correlators with Boundary Contributions","primary_cat":"gr-qc","submitted_at":"2026-06-04T15:23:37+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"The paper derives a correspondence between boundary terms and field redefinitions for cosmological correlators and classifies non-vanishing boundary contributions in massive-exchange diagrams under dS isometries and broken boosts.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2606.02686","ref_index":9,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"On-Shell Bootstrap of Loop Inflation Correlators with Spectral Dispersion","primary_cat":"hep-th","submitted_at":"2026-06-01T18:00:00+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Introduces spectral dispersion bootstrap combining dS spectral decomposition and dispersion relations to compute 3- and 4-point loop correlators with massive scalar and vector exchanges.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.30236","ref_index":12,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Signals from the early Universe: a comprehensive search for primordial features in Planck CMB datasets","primary_cat":"astro-ph.CO","submitted_at":"2026-05-28T17:07:16+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"Systematic re-analysis of Planck PR3 and PR4 CMB datasets finds local fit improvements of up to Δχ² ≈ -15 for certain oscillatory templates but no global significance above 2.6σ after look-elsewhere correction and Bayesian penalties.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.21436","ref_index":125,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Euclid preparation: Testing multi-field inflation with galaxy power spectrum and bispectrum","primary_cat":"astro-ph.CO","submitted_at":"2026-05-20T17:26:36+00:00","verdict":"CONDITIONAL","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Validates redshift-space power spectrum and bispectrum analysis on Abacus-PNG mocks to recover unbiased f_NL constraints for Euclid spectroscopic sample.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.21419","ref_index":22,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Cosmological Collider Signatures from Right-Handed Neutrino Loop","primary_cat":"hep-ph","submitted_at":"2026-05-20T17:13:10+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Right-handed neutrino loops in inflation with seesaw mechanism generate enhanced cosmological collider signatures via a chemical potential from a dimension-5 operator, softening Boltzmann suppression and amplifying oscillatory non-Gaussianity for the dominant helicity mode.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.19953","ref_index":57,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Probing String-Theory-Inspired Topologies of the Early Universe through CMB Temperature and Polarization Anisotropies","primary_cat":"astro-ph.CO","submitted_at":"2026-05-19T15:05:33+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"Reexamination of Planck CMB data finds a possible spatial-parity-breaking signal consistent with six extra dimensions compactified toroidally at the GUT scale before inflation.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.14088","ref_index":10,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Single field matter bounce with dark energy era: comparison with CMB Planck 2018 data and best fit parameters","primary_cat":"astro-ph.CO","submitted_at":"2026-05-13T20:14:23+00:00","verdict":"CONDITIONAL","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"A matter bounce model driven by a scalar field with exponential potential fits Planck 2018 CMB data comparably to inflationary ΛCDM, with the potential slope λ directly setting the scalar spectral index ns.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.21790","ref_index":1,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Informative Priors on Primordial Non-Gaussianity Bias $b_{\\phi}$ From Galaxy Formation","primary_cat":"astro-ph.CO","submitted_at":"2026-04-23T15:46:53+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Conditioning CAMELS-SAM simulations on the stellar mass function or stellar-to-halo mass relation reduces uncertainty in b_phi by 88-97% for DESI emission line galaxy samples while remaining consistent across galaxy formation variations.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"perturbations to the primordial gravitational potentialϕ(x)are parametrized as [50] ϕ(x) =ϕ G (x) +f loc NL[ϕG (x)2 − ⟨ϕG (x)2⟩](1.1) - 1 - whereϕ G (x)is a Gaussian random field,⟨· · · ⟩denotes the ensemble average, andfloc NL quan- tifies the deviation from Gaussianity. Single-field inflationary models [29, 30, 56, 62, 81] predict small deviations (O 10−2\u0001 ), while multi-field models [1, 3, 18] predict larger ampli- tudes (floc NL ≥1). Within the CMB, the PNG signal is constrained through the bispectrum of curvature perturbations:f loc NL governs the amplitude of fluctuations, while the shape of the momentum triangle encodes the specific generation mechanism. A detection of a local-shape primordial bispectrum signal, which peaks in the squeezed limit (k1 ≪k 2, k 3), would rule"},{"citing_arxiv_id":"2604.18416","ref_index":4,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Classical and quantum evolution of inflationary fluctuations","primary_cat":"hep-th","submitted_at":"2026-04-20T15:36:46+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Classical and quantum correlation functions of inflationary perturbations diverge exponentially with e-folds when interactions are relevant, even if forced to agree at an intermediate time.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"from the Cosmic Microwave Background (CMB) and the large scale structure (LSS) distribution of galaxies. Yet, inflation is still unproven. Detecting primordial gravita- tional waves from their effect on the polarization of the CMB B-modes is often regarded as the would-be defini- tive proof that inflation did actually happen [1] or, as it is sometimes put, of the quantum nature of gravity [4]. However, if inflation occurred at a low enough energy scale, this path may always elude us. Future experi- ments [5] aim to measure the tensor-to-scalar ratio at the level of 10 −3, corresponding to a Hubble scale of nearly 1013 GeV. Lowering the observational sensitivity to the Hubble scale by just an order of magnitude represents a tremendous futuristic challenge."},{"citing_arxiv_id":"2604.14549","ref_index":3,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Loop integrals in de Sitter spacetime: The parity-split IBP system and $\\mathrm{d}\\log$-form differential equations","primary_cat":"hep-th","submitted_at":"2026-04-16T02:30:24+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"A parity-split IBP system for n-propagator families in de Sitter space is identified, along with a conjecture that dlog-form differential equations extend to dS integrands with Hankel functions, verified for the one-loop bubble.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"is supported by the NSFC through Grant No. 124B2094. Zhehan Qin is supported by the NSFC through Grant No. 12275146, the National Key R&D Program of China (2021YFC2203100), and the Dushi Program of Tsinghua University. 6 [1] A. Ach' ucarroet al., (2022), arXiv:2203.08128 [astro- ph.CO]. [2] N. Arkani-Hamed, C. Figueiredo, and F. Vaz˜ ao, JHEP 11, 029 (2025), arXiv:2412.19881 [hep-th]. [3] N. Arkani-Hamed, D. Baumann, A. Hillman, A. Joyce, H. Lee, and G. L. Pimentel, (2023), arXiv:2312.05303 [hep-th]. [4] N. Arkani-Hamed, D. Baumann, A. Hillman, A. Joyce, H. Lee, and G. L. Pimentel, Phys. Rev. Lett.135, 031602 (2025), arXiv:2312.05300 [hep-th]. [5] P. Benincasa, (2022), 10.1142/S0217751X22300101, arXiv:2203.15330 [hep-th]. [6] P. Benincasa and G."},{"citing_arxiv_id":"2511.00152","ref_index":78,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Every Wrinkle Carries A Memory: An Integro-differential Bootstrap for Features in Cosmological Correlators","primary_cat":"hep-th","submitted_at":"2025-10-31T18:00:12+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":8.0,"formal_verification":"none","one_line_summary":"Derives integro-differential boundary equations from bulk locality for scale-breaking cosmological correlators with oscillating heavy-field masses and solves them analytically and numerically to reveal enhanced collider signals.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"On the phenomenological side, breaking scale invariance during inflation provides new op- 2Primordial features are particularly fruitful targets for LSS observations because they are partially protected from gravitational non-linear evolutions at late times [83]. This protection is not generic, for instance, it does not extend to (scale-invariant) equilateral-type non-Gaussianities [78]. 3 portunities to probe ultraviolet physics well beyond the Hubble scale. For example, via non-shift symmetric couplings to the inflaton field, particles parametrically heavier than the expansion rate can be non-adiabatically created during inflation. The subsequent de- cay of these species into the inflaton fluctuations would leave a variety of scale-breaking"},{"citing_arxiv_id":"2508.08359","ref_index":1,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"A Compact Story of Positivity in de Sitter","primary_cat":"hep-th","submitted_at":"2025-08-11T18:00:01+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Compares two methods to resolve disagreements and prove positivity of anomalous dimensions for principal series fields coupled to compact scalar operators in de Sitter space.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2505.16820","ref_index":53,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Isotropy, anisotropies and non-Gaussianity in the scalar-induced gravitational-wave background: diagrammatic approach for primordial non-Gaussianity up to arbitrary order","primary_cat":"astro-ph.CO","submitted_at":"2025-05-22T15:55:50+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Extends diagrammatic approach for scalar-induced gravitational waves to arbitrary-order local PNG, deriving semi-analytic spectra for energy density, anisotropies, bispectrum and trispectrum up to quartic terms.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2411.07970","ref_index":87,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"MUltiplexed Survey Telescope (MUST) Science White Paper I: Overview of Large-Scale Structure Cosmology in the Era of Stage-V Spectroscopic Surveys","primary_cat":"astro-ph.CO","submitted_at":"2024-11-12T17:51:21+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"MUST is a planned 6.5m Stage-V spectroscopic survey telescope targeting 100M+ galaxies and quasars to z~5.5 for large-scale structure cosmology studies.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"tion about its initial conditions generated during a primordial era. The most prominent scenario for the primordial universe is cosmic inflation, which refers to a nearly exponential ex- pansion of the universe by roughly 60e-folds in a blink. To probe the microscopic quantum fluctuations of spacetime and matter/fields during inflation, which led to the formation of the LSS [87, 88], is a primary motivation for MUST. Through setting the initial conditions of the LSS, inflation- ary cosmology provides a wealth of observables that reveal the dynamics of the primordial universe and, more interest- ingly, the fundamental physics at the inflation scale. Cur- rent theory and observations suggest that the inflation scale could be up toO(10 13 GeV) [89], which is much higher than"}],"limit":50,"offset":0}