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相关论文: Quantum gravity effects on statistics and compact …

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Within the metric formalism of $f(R)$ theories of gravity, where $R$ is the Ricci scalar, we study the hydrostatic equilibrium structure of compact stars with the inclusion of anisotropic pressure. In particular, we focus on the $f(R)=…

广义相对论与量子宇宙学 · 物理学 2022-07-11 Juan M. Z. Pretel , Sergio B. Duarte

One of the possible potential candidates for describing the universe's rapid expansion is modified gravity. In the framework of the modified theory of gravity $f(R,G)$, the present work features the materialization of anisotropic matter,…

广义相对论与量子宇宙学 · 物理学 2022-06-29 W. U. Rahman , M. Ilyas , Z. Yousaf , S. Ullah , F. Khan , R. khan

Quantum mechanical concept such as the Casimir effect is explored to model traversable wormholes in an extended teleparallel gravity theory. The minimal length concept leading to the generalized uncertainty principle (GUP) is used to obtain…

广义相对论与量子宇宙学 · 物理学 2024-04-09 Abhilipsa Sahoo , S. K. Tripathy , B. Mishra , Saibal Ray

In this essay we show that quantum gravity and the spin-statistics theorem have very interesting consequences for dark matter candidates. Quantum gravity can lead to fifth force type interactions that lead to a lower bound on the masses of…

高能物理 - 唯象学 · 物理学 2022-01-26 Xavier Calmet , Folkert Kuipers

In quantum gravity phenomenology, the effect of the generalized uncertainty principle (GUP) on white dwarfs has been given much attention in the literature. However, these studies assume a zero temperature equation of state (EoS),…

高能物理 - 唯象学 · 物理学 2023-07-12 James David M. Tuñacao , Adrian G. Abac , Roland Emerito S. Otadoy

In recent years it has emerged that the high energy behavior of gravity could be governed by an ultraviolet non-Gaussian fixed point of the (dimensionless) Newton's constant, whose behavior at high energy is thus {\it antiscreened}. This…

高能物理 - 理论 · 物理学 2011-08-17 Alfio Bonanno

In this paper we present a Monte Carlo calculation of the critical temperature and other thermodynamic quantities for the unitary Fermi gas with a population imbalance (unequal number of fermions in the two spin components). We describe an…

量子气体 · 物理学 2010-11-22 Olga Goulko , Matthew Wingate

We analyze the impact of the leading quantum gravity effects on the properties of black holes with nonzero angular momentum by performing a suitable renormalization group improvement of the classical Kerr metric within Quantum Einstein…

高能物理 - 理论 · 物理学 2011-03-23 M. Reuter , E. Tuiran

A recent experimental realization of quantum degenerate gas of $^{40}$K$^{87}$Rb molecules opens up prospects of exploring strong dipolar Fermi gases and many-body phenomena arising in that regime. Here we derive a mean-field variational…

量子气体 · 物理学 2019-08-21 Vladimir Veljic , Axel Pelster , Antun Balaz

Various theories of quantum gravity predict the existence of a minimum length scale, which implies the Planck-scale modifications of the Heisenberg uncertainty principle to a so-called generalized uncertainty principle (GUP). Previous…

广义相对论与量子宇宙学 · 物理学 2017-04-28 Dongfeng Gao , Mingsheng Zhan

Various candidates of quantum gravity such as string theory, loop quantum gravity and black hole physics all predict the existence of a minimum observable length which modifies the Heisenberg uncertainty principle to so-called Generalized…

高能物理 - 理论 · 物理学 2015-03-19 Pouria Pedram

In this paper, we investigate the effects of a new version of the generalized uncertainty principle (modified GUP) on the dynamics of the Universe. As the modified GUP will modify the relation between the entropy and area of the apparent…

广义相对论与量子宇宙学 · 物理学 2017-02-22 Maha Salah , Fayçal Hammad , Mir Faizal , Ahmed Farag Ali

In this paper, a general entropy-corrected FRW cosmological model has been presented in which a deceleration-to-acceleration transition occurs according to recent observations. We found that the case for the flat universe ($k=0$), supported…

广义相对论与量子宇宙学 · 物理学 2019-10-23 Nasr Ahmed , Sultan Z. Alamri

We investigate the thermodynamics of the Schwarzschild-Tangherlini black hole in the context of the generalized uncertainty principle (GUP). The corrections to the Hawking temperature, entropy and the heat capacity are obtained via the…

高能物理 - 理论 · 物理学 2016-09-20 Z. W. Feng , H. L. Li , X. T. Zu , S. Z. Yang

We compute the corrections to the Schwarzschild metric necessary to reproduce the Hawking temperature derived from a Generalized Uncertainty Principle (GUP), so that the GUP deformation parameter is directly linked to the deformation of the…

高能物理 - 理论 · 物理学 2015-09-30 Fabio Scardigli , Roberto Casadio

It is assumed that, for weak spacetime curvature, the main gravitational effect of the quantum vacuum stress-energy corresponds to adding two terms to the Einstein-Hilbert action, proportional to the square of the curvature scalar and to…

广义相对论与量子宇宙学 · 物理学 2010-04-23 Emilio Santos

Considering the modified entropy-area relation from DSR-GUP (Doubly special relativity-Generalized uncertainity principle), we obtain the modified Friedmann equations from the first law of thermodynamics at apparent horizon. Due to the…

广义相对论与量子宇宙学 · 物理学 2020-04-01 Özgür Ökcü , Christian Corda , Ekrem Aydiner

We compute statistical equilibrium states of rotating self-gravitating systems enclosed within a box by maximizing the Fermi-Dirac entropy at fixed mass, energy and angular momentum. We increase the rotation up to the Keplerian limit and…

天体物理学 · 物理学 2008-11-26 P. H. Chavanis , M. Rieutord

Inspired by the entropy-area relation of black hole thermodynamics, we study the thermodynamics of cosmological apparent horizon in a spatially flat Friedmann-Robertson-Walker (FRW) universe in the framework of an Extended Uncertainty…

广义相对论与量子宇宙学 · 物理学 2024-08-29 Maryam Roushan , Narges Rashidi , Kourosh Nozari

This paper provides a concise overview of the comprehensive version of the Generalized Uncertainty Principle (GUP) derived from nonlocal quantum mechanics and extensively addressed by S. Masood, et al. We utilize the specific constraint of…

量子物理 · 物理学 2024-12-18 Ying-Jie Zhao , Yan-Fang Ji , Guang-Rui Yao , Xiaojie Li , Muddasir Hanif