Journal of Cosmology and Astroparticle Physics最新文献_第10页

Lowering the strong coupling mode of modified teleparallel gravity theories 降低修正遥平行引力理论的强耦合模式

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-05-26 DOI: 10.1088/1475-7516/2025/05/088

Yu-Min Hu, Bi-Chu Li, Yang Yu, Martin Krššák, Emmanuel N. Saridakis and Yi-Fu Cai

引用次数: 0

Bounds on velocity-dependent dark matter-baryon scattering from large-scale structure 大尺度结构中速度依赖暗物质-重子散射的边界

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-05-26 DOI: 10.1088/1475-7516/2025/05/087

Adam He, Mikhail M. Ivanov, Rui An, Trey Driskell and Vera Gluscevic

{"title":"Bounds on velocity-dependent dark matter-baryon scattering from large-scale structure","authors":"Adam He, Mikhail M. Ivanov, Rui An, Trey Driskell and Vera Gluscevic","doi":"10.1088/1475-7516/2025/05/087","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/05/087","url":null,"abstract":"We explore interacting dark matter (DM) models that allow DM and baryons to scatter off of each other with a cross section that scales with relative particle velocity. Using the effective field theory of large-scale structure, we perform the first analysis of BOSS full-shape galaxy clustering data for velocity-dependent DM-baryon interactions. We determine that while the addition of BOSS full-shape data visibly modifies the shape of the posterior distribution, it does not significantly alter the 95% confidence level intervals for the interaction cross section obtained from an analysis of the cosmic microwave (CMB) anisotropy from Planck measurements alone. Moreover, in agreement with previous findings, we note that the DM-baryon interacting model presents a good fit to both large-scale structure (LSS) data and CMB data and alleviates the S8 tension between the two data sets. After combining LSS and CMB data with weak lensing data from the Dark Energy Survey, we find a ≳ 2σ preference for non-zero interactions between DM and baryons in a velocity-independent model. We also explore a scenario where only a fraction of DM undergoes scattering with baryons; we find a similar ≳ 2σ preference for the presence of interactions. Our results suggest that a suppression of the linear matter power spectrum at small scales may be needed to resolve certain discrepancies between LSS and CMB data that are found in the cold DM (CDM) scenario.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"334 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Frozen Hayward-boson stars 冰冻的海沃德玻色子恒星

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-05-22 DOI: 10.1088/1475-7516/2025/05/066

Yuan Yue and Yong-Qiang Wang

引用次数: 0

Limits on early matter domination from the isotropic gamma-ray background 各向同性伽玛射线背景对早期物质支配的限制

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-05-22 DOI: 10.1088/1475-7516/2025/05/063

Himanish Ganjoo and M. Sten Delos

引用次数: 0

Reconstructing primordial curvature perturbations via scalar-induced gravitational waves with LISA 利用LISA利用标量引力波重建原始曲率扰动

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-05-22 DOI: 10.1088/1475-7516/2025/05/062

Jonas El Gammal, Aya Ghaleb, Gabriele Franciolini, Theodoros Papanikolaou, Marco Peloso, Gabriele Perna, Mauro Pieroni, Angelo Ricciardone, Robert Rosati, Gianmassimo Tasinato, Matteo Braglia, Jacopo Fumagalli, Jun'ya Kume, Enrico Morgante, Germano Nardini, Davide Racco, Sébastien Renaux-Petel, Hardi Veermäe, Denis Werth, Ivonne Zavala and the LISA Cosmology Working Group

{"title":"Reconstructing primordial curvature perturbations via scalar-induced gravitational waves with LISA","authors":"Jonas El Gammal, Aya Ghaleb, Gabriele Franciolini, Theodoros Papanikolaou, Marco Peloso, Gabriele Perna, Mauro Pieroni, Angelo Ricciardone, Robert Rosati, Gianmassimo Tasinato, Matteo Braglia, Jacopo Fumagalli, Jun'ya Kume, Enrico Morgante, Germano Nardini, Davide Racco, Sébastien Renaux-Petel, Hardi Veermäe, Denis Werth, Ivonne Zavala and the LISA Cosmology Working Group","doi":"10.1088/1475-7516/2025/05/062","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/05/062","url":null,"abstract":"Many early universe scenarios predict an enhancement of scalar perturbations at scales currently unconstrained by cosmological probes. These perturbations source gravitational waves (GWs) at second order in perturbation theory, leading to a scalar-induced gravitational wave (SIGW) background. The LISA detector, sensitive to mHz GWs, will be able to constrain curvature perturbations in a new window corresponding to scales k ∈ [1010, 1014] Mpc-1, difficult to probe otherwise. In this work, we forecast the capabilities of LISA to constrain the source of SIGWs using different approaches: i) agnostic, where the spectrum of curvature perturbations is binned in frequency space; ii) template-based, modeling the curvature power spectrum based on motivated classes of models; iii) ab initio, starting from first-principles model of inflation featuring an ultra-slow roll phase. We compare the strengths and weaknesses of each approach. We also discuss the impact on the SIGW spectrum of non-standard thermal histories affecting the kernels of SIGW emission and non-Gaussianity in the statistics of the curvature perturbations. Finally, we propose simple tests to assess whether the signal is compatible with the SIGW hypothesis. The pipeline used is built into the SIGWAY code.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"45 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Loosely coupled particles in warm inflation 热膨胀中的松散耦合粒子

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-05-22 DOI: 10.1088/1475-7516/2025/05/067

Mehrdad Mirbabayi

引用次数: 0

Cosmology of single species hidden dark matter 单一物种隐藏暗物质的宇宙学

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-05-22 DOI: 10.1088/1475-7516/2025/05/077

Weikang Lin, Xingang Chen, Himanish Ganjoo, Liqiang Hou and Katherine J. Mack

{"title":"Cosmology of single species hidden dark matter","authors":"Weikang Lin, Xingang Chen, Himanish Ganjoo, Liqiang Hou and Katherine J. Mack","doi":"10.1088/1475-7516/2025/05/077","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/05/077","url":null,"abstract":"Cosmology and astrophysics provide various ways to study the properties of dark matter even if they have negligible non-gravitational interactions with the Standard Model particles and remain hidden. We study a type of hidden dark matter model in which the dark matter is completely decoupled from the Standard Model sector except gravitationally, and consists of a single species with conserved comoving particle number and conserved comoving entropy. This category of hidden dark matter includes models that act as warm dark matter but is more general. In particular, in addition to having an independent temperature from the Standard Model sector, it includes cases in which dark matter is in its own kinetic equilibrium or is free-streaming, obeys fermionic or bosonic statistics, and processes a chemical potential that controls the particle occupation number. While the usual parameterization using the free-streaming scale or the particle mass no longer applies, we show that all cases can be well approximated by a set of functions parameterized by only one parameter as long as the chemical potential is nonpositive: the characteristic scale factor at the time of the relativistic-to-nonrelativistic transition. We study the constraints from Big Bang Nucleosynthesis, the cosmic microwave background, the Lyman-α forest, and the smallest halo mass. We show that the most significant phenomenological impact is the suppression of the small-scale matter power spectrum — a typical feature when the dark matter has a velocity dispersion or pressure at early times. So far, the Lyman-α forest and the small dark matter halo population provide the strongest constraints, limiting the transition redshift to be larger than ∼6.2×107.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"4 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Neutrino oscillations as a gravitational wave detector? 中微子振荡作为引力波探测器？

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-05-22 DOI: 10.1088/1475-7516/2025/05/075

Dominik Hellmann, Sara Krieg, Heinrich Päs and Mustafa Tabet

引用次数: 0

Symmetry-breaking inflation in non-minimal metric-affine gravity 非极小度规仿射引力中的对称性破缺膨胀

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-05-22 DOI: 10.1088/1475-7516/2025/05/072

Ioannis D. Gialamas and Antonio Racioppi

引用次数: 0

Cosmological constraints from the Minkowski functionals of the BOSS CMASS galaxy sample BOSS CMASS星系样本Minkowski泛函的宇宙学约束

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-05-22 DOI: 10.1088/1475-7516/2025/05/064

Wei Liu, Enrique Paillas, Carolina Cuesta-Lazaro, Georgios Valogiannis and Wenjuan Fang

{"title":"Cosmological constraints from the Minkowski functionals of the BOSS CMASS galaxy sample","authors":"Wei Liu, Enrique Paillas, Carolina Cuesta-Lazaro, Georgios Valogiannis and Wenjuan Fang","doi":"10.1088/1475-7516/2025/05/064","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/05/064","url":null,"abstract":"For the first time, we develop a simulation-based model for the Minkowski functionals (MFs) of large-scale structure, which allows us to extract the full information available from the MFs (including both the Gaussian and non-Gaussian part), and apply it to the BOSS DR12 CMASS galaxy sample. Our model is based on high-fidelity mock galaxy catalogs constructed from the AbacusSummit simulations using the halo occupation distribution (HOD) framework, which include the redshift-space distortions and Alcock-Paczynski distortions, incorporate survey realism, including survey geometry and veto masks, and account for angular plus radial selection effects. The cosmological and HOD parameter dependence of the MFs is captured with a neural network emulator trained from the galaxy mocks with various cosmological and HOD parameters. To benchmark the constraining power of the MFs, we also train an emulator for the galaxy 2-point correlation function (2PCF) using the same pipeline. Having validated our approach through successful parameter recovery tests on both internal and external mocks, including non-HOD forward models of the halo-galaxy connection, we apply our forward model to analyze the CMASS data in the redshift range 0.45 < z < 0.58. We find the MFs provide stronger constraints on the cosmological parameters than the 2PCF. The combination of the two gives ωcdm = 0.1172+0.0020-0.0023, σ8 = 0.783± 0.026, and ns = 0.966+0.019-0.015, which are tighter by a factor of 2.0, 1.9, and 1.6 than the 2PCF alone. The derived constraint fσ8 = 0.453 ± 0.016 is also improved by a factor of 1.9, compared to the 2PCF, and agrees well with Planck 2018 predictions and other results from a series of studies in the literature. This work provides a new methodology for the application of the MFs to galaxy surveys and demonstrates that non-Gaussian information embedded in the MFs can be exploited to obtain strong constraints on cosmological parameters.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"18 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0