Zobrazeno 1 - 10
of 4 297
pro vyhledávání: '"Hu, Ya."'
In rotating black hole background surrounded by dark matter, we investigated the super-radiant phenomenon of massive scalar field and its associated instability.Using the method of asymptotic matching, we computed the amplification factor of scalar w
Externí odkaz:
http://arxiv.org/abs/2406.04611
Cauchy matrix approach for the discrete Ablowitz-Kaup-Newell-Segur equations is reconsidered, where two `proper' discrete Ablowitz-Kaup-Newell-Segur equations and two `unproper' discrete Ablowitz-Kaup-Newell-Segur equations are derived. The `proper'
Externí odkaz:
http://arxiv.org/abs/2404.14150
This paper explores the generation of primordial black holes (PBHs) and scalar-induced gravitational waves (SIGWs) from the inflation potential with a tiny Lorentz function bump. We choose the Starobinsky model as basic potential, which satisfies the
Externí odkaz:
http://arxiv.org/abs/2403.15979
Publikováno v:
Eur. Phys. J. C (2023) 83:1052
In this paper, we investigate the shadows and rings of the charged Horndeski black hole illuminated by accretion flow that is both geometrically and optically thin. We consider two types of accretion models: spherical and thin-disk accretion flow. We
Externí odkaz:
http://arxiv.org/abs/2311.11780
Publikováno v:
Sci.China Phys.Mech.Astron. 66 (2023) 290411
We revisit the vital issue of gauge dependence in the scalar-induced secondary gravitational waves (SIGWs), focusing on the radiation domination (RD) and matter domination (MD) eras. The energy density spectrum is the main physical observable in such
Externí odkaz:
http://arxiv.org/abs/2308.04713
We present a novel interpretation of the thermodynamics of perfect fluid dark matter (PFDM) black hole based on Misner-Sharp energy, and then investigate its evaporation behavior. We find that the ratio between dark sector initial density and black h
Externí odkaz:
http://arxiv.org/abs/2308.00308
Publikováno v:
Physical Review B 109, 085412 (2024)
We investigate the mesoscopic transport through a twisted bilayer graphene (TBG) consisting of a clean graphene nanoribbon on the bottom and a disordered graphene disc on the top. We show that, with strong top-layer disorder the transmission through
Externí odkaz:
http://arxiv.org/abs/2307.09587
Autor:
Hu, Ya-yuan, Yuan, Shu-hang
In order to reveal the coupling effect among the chemical activity and the hydraulic seepage as well as the mechanical properties, a constitutive theoretical framework considering the chemical activity for saturated porous media is derived from the m
Externí odkaz:
http://arxiv.org/abs/2303.10374
Publikováno v:
Eur. Phys. J. C (2023) 83:281
We investigate the gravitational lensing effect around a spherically symmetric black hole, whose metric is obtained from the Einstein field equation with electric charge and perfect-fluid dark matter contributing to its energy-momentum tensor. We do
Externí odkaz:
http://arxiv.org/abs/2303.00190
We find phase transitions and critical phenomena of the FRW (Friedmann-Robertson-Walker) universe in the framework of an effective scalar-tensor theory that belongs to the Horndeski class. We identify the thermodynamic pressure (generalized force) $P
Externí odkaz:
http://arxiv.org/abs/2301.01938