Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Lin, Weikang"'
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 whi
Externí odkaz:
http://arxiv.org/abs/2305.08943
We propose an inflation model in which the inflationary era is driven by the strong dynamics of $Sp(2)$ gauge theory. The quark condensation in the confined phase of $Sp(2)$ gauge theory generates the inflaton potential comparable to the energy of th
Externí odkaz:
http://arxiv.org/abs/2204.03675
Publikováno v:
Phys. Rev. D 100, 123538 (2019)
Consistency between cosmological data sets is essential for ongoing and future cosmological analyses. We first investigate the questions of stability and applicability of some moment-based inconsistency measures to multiple data sets. We show that th
Externí odkaz:
http://arxiv.org/abs/1910.01608
Autor:
Lin, Weikang, Ishak, Mustapha
Publikováno v:
JCAP 2105:009, 2021
Measures of discordance between datasets have become an essential part of cosmological analyses. It is important to accurately evaluate the significance of such discordances when present. We propose here a Bayesian interpretation of inconsistency mea
Externí odkaz:
http://arxiv.org/abs/1909.10991
Autor:
Ishak, Mustapha, Baker, Tessa, Bull, Philip, Pedersen, Eske M., Blazek, Jonathan, Ferreira, Pedro G., Leonard, C. Danielle, Lin, Weikang, Linder, Eric, Pardo, Kris, Valogiannis, Georgios
One of the main science goals of the Large Synoptic Survey Telescope (LSST) is to uncover the nature of cosmic acceleration. In the base analysis, possible deviations from the Lambda-Cold-Dark-Matter ($\Lambda$CDM) background evolution will be probed
Externí odkaz:
http://arxiv.org/abs/1905.09687
Autor:
Lin, Weikang, Ishak, Mustapha
Publikováno v:
Phys. Rev. D 96, 083532 (2017)
We examine systematically the (in)consistency between cosmological constraints as obtained from various current data sets of the expansion history, Large Scale Structure (LSS), and Cosmic Microwave Background (CMB) from Planck. We run (dis)concordanc
Externí odkaz:
http://arxiv.org/abs/1708.09813
Autor:
Lin, Weikang, Ishak, Mustapha
Publikováno v:
Phys. Rev. D 96, 023532 (2017)
The continuous progress toward more precise cosmological surveys and experiments has galvanized recent interest into consistency tests on cosmological parameters and models. At the heart of this effort is quantifying the degree of inconsistency betwe
Externí odkaz:
http://arxiv.org/abs/1705.05303
Autor:
Lin, Weikang, Ishak, Mustapha
Publikováno v:
Phys. Rev. D 94, 123011 (2016)
Primordial gravitational waves constitute a promising probe of the very early Universe and the laws of gravity. We study in this work changes to tensor-mode perturbations (TMPs) that can arise in various proposed modified gravity (MG) theories. These
Externí odkaz:
http://arxiv.org/abs/1605.03504
Publikováno v:
Phys. Rev. D 94, 083501 (2016)
One of the outstanding problems in general relativistic cosmology is that of the averaging. That is, how the lumpy universe that we observe at small scales averages out to a smooth Friedmann-Lemaitre-Robertson-Walker (FLRW) model. The root of the pro
Externí odkaz:
http://arxiv.org/abs/1604.03503
Autor:
Lin, Weikang, Ishak, Mustapha
Publikováno v:
JCAP 1610:025, 2016
The scenario consistent with a wealth of observations for the missing mass problem is that of weakly interacting dark matter particles. However, arguments or proposals for a Newtonian or relativistic modified gravity scenario continue to be made. A d
Externí odkaz:
http://arxiv.org/abs/1604.00950