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Tribrid inflation, type II leptogenesis, and observable gravitational waves in supersymmetric SU(3) c × SU(2) L × SU(2) R × U(1) B-L ... 超对称星系SU(3) c × SU(2) L × SU(2) R × U(1) B-L中可观测到的引力波的混合暴胀、II型轻生…
IF 6.4 2区 物理与天体物理
Journal of Cosmology and Astroparticle Physics Pub Date : 2025-10-02 DOI: 10.1088/1475-7516/2025/10/019
Waqas Ahmed, Saleh O. Allehabi, Farishta Israr and Mansoor Ur Rehman
{"title":"Tribrid inflation, type II leptogenesis, and observable gravitational waves in supersymmetric SU(3) c × SU(2) L × SU(2) R × U(1) B-L ...","authors":"Waqas Ahmed, Saleh O. Allehabi, Farishta Israr and Mansoor Ur Rehman","doi":"10.1088/1475-7516/2025/10/019","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/10/019","url":null,"abstract":"We present a concrete realization of tribrid inflation within the framework of the gauge group SU(3)c × SU(2)L × SU(2)R × U(1)B-L. In this model, inflation is driven by the neutral components of SU(2)L triplet Higgs fields, which also play a central role in generating the observed baryon asymmetry of the universe via non-thermal leptogenesis. Tiny neutrino masses arise naturally through a type-II seesaw mechanism, facilitated by SU(2)R triplet Higgs fields. Supergravity corrections, stemming from the leading-order terms in a non-minimal Kähler potential, are essential in bringing the predictions of the scalar spectral index ns into agreement with the latest cosmological data, including the Atacama Cosmology Telescope Data Release 6, Planck 2018, and LB-BK18. A key feature of this model is the existence of a viable parameter space that predicts potentially observable primordial gravitational waves, with a tensor-to-scalar ratio r ≲ 0.001, placing it within reach of upcoming experiments.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"75 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209648","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
Time non-locality in dark matter and LSS 暗物质和LSS中的时间非定域性
IF 6.4 2区 物理与天体物理
Journal of Cosmology and Astroparticle Physics Pub Date : 2025-10-02 DOI: 10.1088/1475-7516/2025/10/018
Arhum Ansari, Arka Banerjee, Sachin Jain and Shaunak Padhyegurjar
{"title":"Time non-locality in dark matter and LSS","authors":"Arhum Ansari, Arka Banerjee, Sachin Jain and Shaunak Padhyegurjar","doi":"10.1088/1475-7516/2025/10/018","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/10/018","url":null,"abstract":"We explore the intriguing phenomenon of time non-locality in the evolution of dark matter and Large Scale Structure (LSS). Recently in [1], it was shown that time non-locality emerges in bias tracer fluctuations, which are SO(3) scalars in real space, at fifth order in the perturbation expansion in dark matter overdensity. We demonstrate that by breaking the symmetry down to SO(2), which is the case whenever line-of-sight effects become important, such as for flux fluctuations in the Lyman α forest, the temporal non-locality appears at the third order in expansion. Additionally, within the framework of EFTofLSS, we demonstrate that time non-locality manifests in the effective stress tensor of dark matter, which is a second rank tensor under SO(3) transformations, again at the third order in dark matter overdensity. Furthermore, we highlight the effectiveness of the standard Π basis [2] in handling time non-local operators.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"3 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209629","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
The dark matter diffused supernova neutrino background 暗物质扩散了超新星中微子背景
IF 6.4 2区 物理与天体物理
Journal of Cosmology and Astroparticle Physics Pub Date : 2025-10-02 DOI: 10.1088/1475-7516/2025/10/020
Garv Chauhan, R. Andrew Gustafson, Gonzalo Herrera, Taj Johnson and Ian M. Shoemaker
{"title":"The dark matter diffused supernova neutrino background","authors":"Garv Chauhan, R. Andrew Gustafson, Gonzalo Herrera, Taj Johnson and Ian M. Shoemaker","doi":"10.1088/1475-7516/2025/10/020","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/10/020","url":null,"abstract":"We consider neutrinos scattering off Milky Way dark matter and the impact of this scattering on supernovae neutrinos. This can take the form of attenuation on the initial flux of neutrinos and a time-delayed flux of scattered neutrinos. Considering dark matter masses above 100 MeV and past Milky Way supernovae, we find this time-delayed flux is nearly constant in time. We call this flux the Dark Matter Diffused Supernova Neutrino Background (DMDSNB), and use Super-K limits on the Diffuse Supernova Neutrino Background (DSNB) flux to set limits on the dark matter-neutrino scattering cross section. We find σDM-ν/mDM ≲ 2.4 × 10-24cm2/GeV for mDM ≳ 1 GeV, which is the strongest bound to date on dark matter-neutrino scatterings at MeV energies, and stronger than bounds set from SN1987A neutrino attenuation by an order of magnitude. We end by discussing how the DMDSNB could be distinguished from the DSNB.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"78 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209649","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
Robust cosmic shear with small-scale nulling 具有小尺度零化的强健宇宙剪切
IF 6.4 2区 物理与天体物理
Journal of Cosmology and Astroparticle Physics Pub Date : 2025-10-02 DOI: 10.1088/1475-7516/2025/10/017
Giulia Piccirilli, Matteo Zennaro, Carlos García-García and David Alonso
{"title":"Robust cosmic shear with small-scale nulling","authors":"Giulia Piccirilli, Matteo Zennaro, Carlos García-García and David Alonso","doi":"10.1088/1475-7516/2025/10/017","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/10/017","url":null,"abstract":"Standard cosmological weak lensing analyses using cosmic shear are inevitably sensitive to small-scale, non-linear clustering from low-redshift structures. The need to adequately model the clustering of matter on this non-linear regime, accounting for both gravitational and baryonic effects, adds significant uncertainty to weak lensing studies, particularly in the context of near-future Stage-IV datasets. In this paper, inspired by previous work on so-called “nulling” techniques, we present a general method that selects the linear combinations of a given tomographic cosmic shear dataset that are least sensitive to small-scale non-linearities, by essentially suppressing the contribution from low-redshift structures. We apply this method to the latest public cosmic shear data from the Dark Energy Survey, DES-Y3, that corresponds to 3 years of observation, and show: a) that a large fraction of the signal is dominated by the single mode that is most affected by non-linear scales, and b) that removing this mode leads to a ∼ 1σ upwards shift in the preferred value of S8 ≡ σ8√(ΩM/0.3), alleviating the tension with current CMB data. However, the removal of the most contaminated mode also results in a significant increase in the statistical uncertainties. Taking this into account, we find this shift to be compatible with a random fluctuation caused by removing this most-contaminated mode at the ∼ 1.4σ level. We also show that this technique may be used by future Stage-IV surveys to mitigate the sensitivity of the final constraints to baryonic effects, trading precision for robustness.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"98 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209628","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
Fast radio bursts and electromagnetic transition radiation on gravitational shockwaves 重力冲击波上的快速射电暴和电磁跃迁辐射
IF 6.4 2区 物理与天体物理
Journal of Cosmology and Astroparticle Physics Pub Date : 2025-10-01 DOI: 10.1088/1475-7516/2025/10/008
D.V. Fursaev, E.A. Davydov and V.A. Tainov
{"title":"Fast radio bursts and electromagnetic transition radiation on gravitational shockwaves","authors":"D.V. Fursaev, E.A. Davydov and V.A. Tainov","doi":"10.1088/1475-7516/2025/10/008","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/10/008","url":null,"abstract":"When a gravitational shockwave hits a magnetar it creates perturbations of the magnetar magnetic field in a form of a transition radiation. We argue that this radiation can be a novel candidate to explain the origin of fast radio bursts (FRB). A unique feature of the transition radiation on the shockwaves is that normal components of its Maxwell strength `remember' only the spatial `profile' of the shock, not the form of the signal. This fact allows us to determine completely a characteristic initial problem for the perturbations with Cauchy data defined on a null hypersurface just behind the shockwave front. The computations are carried by modeling magnetar as a magnetic dipole. As an illustration we consider shockwaves created by ultrarelativistic objects of two types, by compact sources or by cosmic strings. In the both cases the duration of the engine pulse is determined by an impact distance between the magnetar and the source. We present the angular distribution of the transition radiation flux and show that it is consistent with properties of the FRB engine.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"22 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203023","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
Looking for the gamma-Ray cascades of the KM3-230213A neutrino source 寻找KM3-230213A中微子源的伽马射线级联
IF 6.4 2区 物理与天体物理
Journal of Cosmology and Astroparticle Physics Pub Date : 2025-10-01 DOI: 10.1088/1475-7516/2025/10/009
Milena Crnogorčević, Carlos Blanco and Tim Linden
{"title":"Looking for the gamma-Ray cascades of the KM3-230213A neutrino source","authors":"Milena Crnogorčević, Carlos Blanco and Tim Linden","doi":"10.1088/1475-7516/2025/10/009","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/10/009","url":null,"abstract":"The extreme energy of the KM3-230213A event could transform our understanding of the most energetic sources in the Universe. However, it also reveals an inconsistency between the KM3NeT detection and strong IceCube constraints on the ultra-high energy neutrino flux. The most congruous explanation for the KM3NeT and IceCube data requires KM3-230213A to be produced by a (potentially transient) source fortuitously located in a region where the KM3NeT acceptance is maximized. In hadronic models of ultra-high-energy neutrino production, such a source would also produce a bright γ-ray signal, which would cascade to GeV-TeV energies due to interactions with extragalactic background light. We utilize the γ-Cascade package to model the spectrum, spatial extension, and time-delay of such a source, and scan a region surrounding the KM3NeT event to search for a consistent γ-ray signal. We find no convincing evidence for a comparable Fermi-LAT source and place constraints on a combination of the source redshift and the intergalactic magnetic field strength between the source and Earth.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"1 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203025","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
Implications of Pulsar Timing Arrays for Gauss-Bonnet inflation 脉冲星定时阵列对高斯-邦纳暴胀的影响
IF 6.4 2区 物理与天体物理
Journal of Cosmology and Astroparticle Physics Pub Date : 2025-10-01 DOI: 10.1088/1475-7516/2025/10/013
Reginald Christian Bernardo, Seoktae Koh and Gansukh Tumurtushaa
{"title":"Implications of Pulsar Timing Arrays for Gauss-Bonnet inflation","authors":"Reginald Christian Bernardo, Seoktae Koh and Gansukh Tumurtushaa","doi":"10.1088/1475-7516/2025/10/013","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/10/013","url":null,"abstract":"Correlated time-of-arrival measurements by pulsar timing arrays (PTAs) have provided a new means of constraining astrophysical or cosmological models that produce a gravitational wave (GW) background. For this work, we discuss the implications of PTA observations for Gauss-Bonnet (GB) inflationary models through the production and propagation of inflationary GWs. We show that our GB inflationary scenario is consistent with present PTA and cosmological data. A blue-tilted tensor power spectrum supported by PTAs can be naturally accommodated in GB inflation. Using observational constraints, we derive general conditions for the inflaton potential and the GB coupling function, suggesting that in GB inflation, the inflaton must climb up the potential before rolling downhill and reaching the end of inflation. We provide two concrete GB inflationary models to demonstrate the viability of this mechanism.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"101 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203028","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
Playground of lognormal seminumerical simulations of the Lyman α forest: thermal history of the intergalactic medium 莱曼α森林的对数正态半数值模拟的游乐场：星系间介质的热历史
IF 6.4 2区 物理与天体物理
Journal of Cosmology and Astroparticle Physics Pub Date : 2025-10-01 DOI: 10.1088/1475-7516/2025/10/015
T. Ondro, B. Arya, R. Gális and P. Bednár
{"title":"Playground of lognormal seminumerical simulations of the Lyman α forest: thermal history of the intergalactic medium","authors":"T. Ondro, B. Arya, R. Gális and P. Bednár","doi":"10.1088/1475-7516/2025/10/015","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/10/015","url":null,"abstract":"This study aims to test a potential application of lognormal seminumerical simulations to recover the thermal parameters and Jeans length. This could be suitable for generating large number of synthetic spectra with various input data and parameters, and thus ideal for interpreting the high-quality data obtained from QSO absorption spectra surveys. We use a seminumerical approach to simulate absorption spectra of quasars at redshifts 3 ≤ z ≤ 5. These synthetic spectra are compared with the 1D flux power spectra and using the Markov Chain Monte Carlo analysis method, we determine the temperature at mean density, slope of the temperature-density relation and Jeans length. Our best-fit model is also compared with the evolution of the temperature of the intergalactic medium from various UVB models. We show that the lognormal simulations can effectively recover thermal parameters and Jeans length.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"19 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203030","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
Beyond standard model particles in the atmospheric flux: a long-lived stau example 大气通量中超越标准模型的粒子：一个长期存在的状态例子
IF 6.4 2区 物理与天体物理
Journal of Cosmology and Astroparticle Physics Pub Date : 2025-10-01 DOI: 10.1088/1475-7516/2025/10/007
Atri Bhattacharya, Mary Hall Reno and Ina Sarcevic
{"title":"Beyond standard model particles in the atmospheric flux: a long-lived stau example","authors":"Atri Bhattacharya, Mary Hall Reno and Ina Sarcevic","doi":"10.1088/1475-7516/2025/10/007","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/10/007","url":null,"abstract":"We discuss fluxes of long-lived supersymmetric (SUSY) particles produced in the atmosphere from ultra-high energy cosmic-ray interactions with air nuclei. We consider long-lived particle production which proceeds first via the on-shell formation of heavier particles in the SUSY spectrum and then their decays. Specifically, we focus on the production of stau pairs from the decays of squarks produced in the initial cosmic ray-air collision under the purview of gauge-mediated symmetry breaking models that have the stau as the next-to-lightest SUSY particle. The calculation of the resulting stau flux schematically mirrors that of prompt atmospheric neutrino production, however, with the energy scale of initial hadronic collision set to EeV energy scales of the incident cosmic rays rather than the PeV energies where the prompt atmospheric neutrino fluxes dominate over neutrino fluxes from pions and kaons, and with the appropriate stau production cross section. We show the effect of accounting for the energy distribution of the staus relative to the squark energy distributions. We discuss the potential for future ultra-high energy detectors similar in scope to IceCube-Gen2 to detect atmospheric staus via tracks going through the detector volume. Current collider constraints on stau pair production within the SUSY framework considered here are more constraining than those from a detector like IceCube-Gen2 over ten years.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"33 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203022","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
Relationship between 2D and 3D galaxy stellar mass and correlations with halo mass 二维和三维星系恒星质量的关系及其与光晕质量的相关性
IF 6.4 2区 物理与天体物理
Journal of Cosmology and Astroparticle Physics Pub Date : 2025-10-01 DOI: 10.1088/1475-7516/2025/10/014
Conghao Zhou, Alexie Leauthaud, Shuo Xu, Benedikt Diemer, Song Huang, Katya Leidig, Tesla Jeltema, Marco Gatti, Yifei Luo, Carlo Cannarozzo and Sven Heydenreich
{"title":"Relationship between 2D and 3D galaxy stellar mass and correlations with halo mass","authors":"Conghao Zhou, Alexie Leauthaud, Shuo Xu, Benedikt Diemer, Song Huang, Katya Leidig, Tesla Jeltema, Marco Gatti, Yifei Luo, Carlo Cannarozzo and Sven Heydenreich","doi":"10.1088/1475-7516/2025/10/014","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/10/014","url":null,"abstract":"Recent studies suggest that the stars in the outer regions of massive galaxies trace halo mass better than the inner regions and that an annular stellar mass provides a low scatter method of selecting galaxy clusters. However, we can only observe galaxies as projected two-dimensional objects on the sky. In this paper, we use a sample of simulated galaxies with stellar mass M* > 1011.2M⊙ and z = 0.4 from TNG300 of the IllustrisTNG project to study how well galaxy stellar mass profiles in three dimensions correlate with halo mass, and what effects arise when observationally projecting stellar profiles into two dimensions. We compare 2D and 3D outer stellar mass selections and find that they have similar performance as halo mass proxies and that, surprisingly, a 2D selection sometimes has marginally better performance with a 0.2 dex scatter of halo mass at given stellar mass in the best case. We also investigate whether the weak lensing profiles around galaxies selected by 2D outer stellar mass suffer from projection effects. We find that the lensing profiles of samples selected by 2D and 3D definitions are nearly identical, suggesting that the 2D selection does not create a bias. These findings underscore the promise of using outer stellar mass as a tool for identifying galaxy clusters.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"114 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145203029","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
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