9 papers
Dark matter distributions around extreme mass ratio inspirals: effects of radial pressure and relativistic treatment
Yang Zhao, Yungui Gong
We investigate different treatments of dark matter (DM) distributions surrounding extreme mass ratio inspirals (EMRIs) to assess their impact on orbital evolution and gravitational…
Examining a new form of non-standard dark matter using DESI DR2 data
Yan-Hong Yao, Yi-Hao Shen, Tian-Nuo Li +2
In this work, we propose a non-standard dark matter (NSDM) model in which the equation of state (EoS) of dark matter (DM) is parameterized as , and this DM mo…
Rescattering of non-minimal coupling scalar particles during inflation
Zhe Yu, Xunliang Yang, Yungui Gong
We investigate the rescattering effects arising from non-minimally coupled scalar particles that are suddenly produced during inflation. The coupling term significantl…
Inflationary Models with Gauss-Bonnet Coupling in Light of ACT Observations
Yigan Zhu, Qing Gao, Yungui Gong +1
Recent analyses combining Atacama Cosmology Telescope (ACT) data with other cosmological datasets report a higher scalar spectral index , creating tension with a wide range of…
Observational constraints on inflationary models with non-minimally derivative coupling by ACT
Qing Gao, Yanjiang Qian, Yungui Gong +1
The most recent data release from the Atacama Cosmology Telescope (ACT) reveals a larger value of the scalar spectral tilt , ruling out a broad class of inflationary attractor…
Approximate reconstruction of inflationary potential with ACT observations
Zhu Yi, Xingzhi Wang, Qing Gao +1
The Atacama Cosmology Telescope (ACT) has recently reported updated measurements of the scalar spectral index , revealing a tension with the predictions of many conventional i…