Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Ilyas, Amara"'
Autor:
Yang, Junyue, Wang, Xiaoding, Ma, Xiao-Han, Zhang, Dongdong, Yan, Sheng-Feng, Ilyas, Amara, Cai, Yi-Fu
Primordial black holes (PBHs) are considered viable candidates for dark matter and the seeds of supermassive black holes (SMBHs), with their fruitful physical influences providing significant insights into the conditions of the early Universe. Cosmic
Externí odkaz:
http://arxiv.org/abs/2408.16579
Fuzzy dark matter (FDM) with mass around $10^{-22}$ eV is viewed as a promising paradigm in understanding the structure formation of the local universe at small scales. Recent observations, however, begin to challenge FDM in return. We focus on the a
Externí odkaz:
http://arxiv.org/abs/2407.19521
Publikováno v:
JCAP10(2022)087
We calculate the quasinormal modes (QNM) frequencies of a test massless scalar field and an electromagnetic field around static black holes in $f(T)$ gravity. Focusing on quadratic $f(T)$ modifications, which is a good approximation for every realist
Externí odkaz:
http://arxiv.org/abs/2204.11169
Publikováno v:
JCAP11(2021)045
We investigate the bounce realization in the framework of DHOST cosmology, focusing on the relation with observables. We perform a detailed analysis of the scalar and tensor perturbations during the Ekpyrotic contraction phase, the bounce phase, and
Externí odkaz:
http://arxiv.org/abs/2108.01339
Publikováno v:
JHEP01(2021)141
In this article, we present an emergent universe scenario that can be derived from DHOST cosmology. The universe starts asymptotically Minkowski in the far past just like the regular Galileon Genesis, but evolves to a radiation dominated period at th
Externí odkaz:
http://arxiv.org/abs/2009.10351
Publikováno v:
JCAP 09 (2020) 002
We present a new class of nonsingular bounce cosmology free from instabilities, using a single scalar field coupled to gravity within the framework of the Degenerate Higher-Order Scalar-Tensor (DHOST) theories. In this type of scenarios, the gradient
Externí odkaz:
http://arxiv.org/abs/2002.08269
In this paper, we examine the possible realization of a new family of inflation called "shaft inflation" by assuming the modified Chaplygin gas model and tachyon scalar field. We also consider the special form of dissipative coefficient as $\Gamma={a
Externí odkaz:
http://arxiv.org/abs/1702.07345
Publikováno v:
Int. J. Mod. Phys. D 26 (2017) 1750031
We investigate the role of bulk viscous pressure on the warm inflationary modified Chaplygin gas in brane-world framework in the presence of standard scalar field. We assume the intermediate inflationary scenario in strong dissipative regime and cons
Externí odkaz:
http://arxiv.org/abs/1603.08798
Publikováno v:
In Physics of the Dark Universe December 2019 26
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