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相关论文: Nonhomogeneous Cooling, Entropic Gravity and MOND …

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G\"oran Lindblad in 1983 published a monograph on non-equilibrium thermodynamics. We here summarize the contents of this book, and provide a perspective on its relation to later developments in statistical physics and quantum physics. We…

量子物理 · 物理学 2023-07-26 Erik Aurell , Ryoichi Kawai

We derive the mass-temperature relation using an improved top-hat model and a continuous formation model which takes into account the effects of the ordered angular momentum acquired through tidal-torque interaction between clusters, random…

宇宙学与河外天体物理 · 物理学 2019-08-21 Antonino Del Popolo , Francesco Pace , David F. Mota

We explore on the one hand, whether the well-known theorem of equipartition of energy also applies to physical systems in which gravity plays a non-negligible role, as is the case of cosmological horizons and, on the other hand, if the…

广义相对论与量子宇宙学 · 物理学 2025-08-19 Diego Pavon

The modified Newtonian dynamics (MOND), suggested by Milgrom as an alternative to dark matter, implies that isothermal spheres with a fixed anisotropy parameter should exhibit a near perfect relation between the mass and the fourth power of…

天体物理学 · 物理学 2009-10-31 R. H. Sanders

This dissertation investigates thermodynamic, emergent and holographic aspects of gravity in the context of causal diamonds. We obtain a gravitational first law for causal diamonds in maximally symmetric spacetimes and argue that these…

高能物理 - 理论 · 物理学 2019-08-16 Manus R. Visser

A unified theory is presented for finite-temperature many-body perturbation expansions of the anharmonic vibrational contributions to thermodynamic functions: the free energy, internal energy, and entropy. The theory is diagrammatically…

统计力学 · 物理学 2023-08-29 Xiuyi Qin , So Hirata

The MOND paradigm posits a departure from standard Newtonian dynamics, and from General Relativity, in the limit of small accelerations. The resulting modified dynamics aim to account for the mass discrepancies in the universe without…

宇宙学与河外天体物理 · 物理学 2011-12-09 Mordehai Milgrom

Within the context of Newton's theory of gravitation, restricted to point-like test particles and central bodies, stable circular orbits in ordinary space are related to stable circular paths on a massless, unmovable, undeformable…

经典物理 · 物理学 2017-08-02 R. Caimmi

We report analytically known states at non-zero temperature which may serve as a powerful tool to reveal common topological and thermodynamic properties of systems ranging from the QCD phase diagram to topological phase transitions in…

高能物理 - 理论 · 物理学 2021-04-07 Casey Cartwright , Benjamin Harms , Matthias Kaminski

This pedagogical comment highlights three misconceptions concerning the usefulness of the concept of negative temperature; being derived from the usual, often termed Boltzmann, definition of entropy. First, both the Boltzmann and Gibbs…

统计力学 · 物理学 2016-04-06 Julian Poulter

MOG is a fully relativistic modified theory of gravity based on an action principle. The MOG field equations are exactly solvable numerically in two important cases. In the spherically symmetric, static case of a gravitating mass, the…

广义相对论与量子宇宙学 · 物理学 2010-11-25 J. W. Moffat , V. T. Toth

In this article we construct a relativistic extended metric theory of gravity, for which its weak field limit reduces to the non-relativistic MOdified Newtonian Dynamics regime of gravity. The theory is fully covariant and the way to…

广义相对论与量子宇宙学 · 物理学 2017-09-01 E. Barrientos , S. Mendoza

Cold atomic gases have proven capable of emulating a number of fundamental condensed matter phenomena including Bose-Einstein condensation, the Mott transition, Fulde-Ferrell-Larkin-Ovchinnikov pairing and the quantum Hall effect. Cooling…

In this paper, we consider the holograph principle emergent from noncommutative geometry, based on the spectral action principle. We show that under some appropriate conditions, the gravity theory on a manifold with boundary could be…

广义相对论与量子宇宙学 · 物理学 2010-07-20 Jingbo Wang

The suspicion that gravity is holographic has been supported mainly by a variety of specific examples from string theory. In this paper, we propose that such a holography can actually be observed in the context of Einstein's gravity and at…

高能物理 - 理论 · 物理学 2015-06-22 Yu Tian , Xiao-Ning Wu , Hongbao Zhang

In Verlinde's theory of entropic gravity, the internal degrees of freedom are marked by "bits", but the microscopic origin of "bits" is unknown hitherto. To this direction, we adopt the quantum harmonic oscillators to naively model the…

高能物理 - 理论 · 物理学 2013-04-12 Towe Wang , Yi-Wei Wu , Jian Zhao

Thermodynamics on the cosmological apparent horizon of a flat Friedmann-Lemaitre-Robertson-Walker metric has been investigated with Bekenstein entropy and Hawking temperature on the horizon, and Unruh temperature for the fluid inside the…

广义相对论与量子宇宙学 · 物理学 2016-07-15 Subhajit Saha

Using a uniformization map we determine the holographic entanglement entropy for states of a Warped Conformal Field Theory dual to a generic vacuum metric in AdS$_3$ gravity with Comp\`ere--Song--Strominger boundary conditions. We point out…

高能物理 - 理论 · 物理学 2020-06-30 Stéphane Detournay , Daniel Grumiller , Max Riegler , Quentin Vandermiers

MOND, invented by Milgrom, is a phenomenological scheme whose basic premise is that the visible matter distribution in a galaxy or cluster of galaxies alone determines its dynamics. MOND fits many observations surprisingly well. Could it be…

天体物理学 · 物理学 2007-05-23 Jacob D. Bekenstein

Four principles are proposed to underlie the quantum theory of gravity. We show that these suffice to recover the Einstein equations. We also suggest that MOND results from a modification of the classical equivalence principle, due to…

广义相对论与量子宇宙学 · 物理学 2016-10-07 Lee Smolin