We study the physical process version and the equilibrium state version of the first law of thermodynamics for a charged p-brane. the general setting for our investigations is (n+p+1)-dimensional Einstein dilaton gravity with (p+2) strength form fields.
The universal thermodynamic relations between corrections to entropy and extremality for various black holes solutions have been studied. In this regard, we hereby consider a number of different black brane solutions in different structures for perturbative corrections to general relativity. These are, namely, black brane solution in Rastall AdS massive gravity, Einstein-Yang-Mills AdS black brane solution in massive gravity and general anisotropic black brane in Horava-Lifshitz gravity. We calculate both the entropy and extremality bound by introducing a small constant correction to the actio…
Black p-brane Thermodynamics without Constructing Solutions
Center for Joint Quantum Studies, Department of Physics, School of Science, Tianjin University(天津大学理学院物理系联合量子研究中心);The International Joint Institute of Tianjin University, Fuzhou, Tianjin University(天津大学福州国际联合学院)
Motivated by a recent work on asymptotically Ad$S_4$ black holes in M-theory, we investigate both thermodynamics and thermodynamical geometry of Raissner-Nordstrom-AdS black holes from M2-branes. More precisely, we study AdS black holes in $AdS_{4}\times S^{7}$, with the number of M2-branes interpreted as a thermodynamical variable. In this context, we calculate various thermodynamical quantities including the chemical potential, and examine their phase transitions along with the corresponding stability behaviors. In addition, we also evaluate the thermodynamical curvatures of the Weinhold, Ru…
We study the thermodynamics of flavor D7-branes embedded in an anisotropic black brane solution of type IIB supergravity. The flavor branes undergo a phase transition between a `Minkowski embedding', in which they lie outside of the horizon, and a `black hole embedding', in which they fall into the horizon. This transition depends on the black hole temperature, its degree of anisotropy, and the mass of the flavor degrees of freedom. It happens either at a critical temperature or at a critical anisotropy. A general lesson we learn from this analysis is that the anisotropy, in this particular re…
Instability of de Sitter brane and horizon entropy in a 6D braneworld
我们研究了一类具有deSitter膜的六维膜世界解的热力学和动力学稳定性。首先,我们研究热力学稳定性的德西特熵。我们看到解族分为两个不同的分支:高熵分支和低熵分支。通过与普通热力学类比,高熵分支被期望是稳定的,而低熵分支是不稳定的。接下来,我们通过分析解周围的线性扰动来研究动态稳定性。根据4D de Sitter对称性的表示,将扰动分解为标量、矢量和张量扇区,并分别对每个扇区进行分析。结果表明,当膜上的哈勃膨胀率太大时,标量扇区中会出现快子模,背景解变得动力学不稳定。我们分析表明,发病的热力学不稳定性和动力学不稳定性完全一致。因此,膜世界模型提供了一个新的例子,说明热力学和动力学不稳定性之间的密切关系。
We investigate general features of charged Lovelock black branes by giving a detailed description of geometrical, thermodynamic and holographic properties of charged Gauss-Bonnet (GB) black branes in five dimensions. We show that when expressed in terms of effective physical parameters, the thermodynamic behaviour of charged GB black branes is completely indistinguishable from that of charged Einstein black branes. Moreover, the extremal, near-horizon limit of the two classes of branes is exactly the same as they allow for the same AdS$_2\times R_3$, near-horizon, exact solution. This implies …
In this paper we study the thermodynamics of black branes at quantum scales. We analyze both perturbative and non-perturbative corrections to the thermodynamics of such black branes. It will be observed that these corrections will modify the relation between the entropy and area of these black branes. This will in turn modify their specific heat, and thus their stability. So, such corrections can have important consequences for the stability of black branes at quantum scales. We also analyze the effect of these perturbative and non-perturbative quantum corrections on various other thermodynami…
In this paper, we will analyze the effects of super-light brane world perturbative modes on clustering of galaxies. In present manuscript, we use the Boltzmann and Tsallis statistical approaches to study the large distance modification of gravity in the brane world. The impact of modified potential on clustering of galaxies is analyzed in both the approaches. The infinities associated with Newtonian point mass approximation of gravity models is removed using the analytical extensions. The regularized and finite partition function is obtained for the system of galaxies in the brane world model …
We study higher derivative corrections to black brane thermodynamics and their implications for the weak gravity conjecture for $p$-form gauge fields. In particular we show that higher derivative corrections decrease tension-to-charge ratios of extremal black branes as implied by the weak gravity conjecture, if four-derivative couplings follow scattering positivity bounds. We also demonstrate that entropy corrections in the micro canonical ensemble are positive under the same assumptions. This extends earlier works in the Einstein-Maxwell theory to $p$-form gauge fields in general spacetime di…
For the the quintic quasitopological action which has no well-defined variational principle, we introduced a surface term that for a spacetime with flat boundaries make the action well-defined. Moreover, we investigated the numerical solutions of the above-mentioned gravity coupled to the nonlinear logarithmic and exponential electrodynamics. It has no horizon and curvature except one conical singularity at $r=0$ with a deficit angle $δϕ$. Also we found the counterterm which removes non-logarithmic divergences for the static quintic quasitopological gravity. Using this counterterm one can calc…
Thermodynamic Topology and Photon Spheres Analysis of Black Holes in Brane-World: Insights from Barrow Entropy
Fukushima University(福岛大学);Zhejiang University of Technology(浙江工业大学);COMSATS University Islamabad, Lahore-Campus(科姆斯特斯伊斯兰堡大学拉合尔校区);University of Mazandaran(马赞达兰大学)
Holographic Thermodynamic on the Brane in Topological Reissner-Nordström de Sitter Space
我们考虑拓扑Reissner-Nordström de Sitter黑洞的体背景中的膜宇宙。当膜穿过黑洞视界或宇宙学视界时,对偶CFT的热力学量(包括熵)具有通常的特殊形式,用哈勃参数及其时间导数表示.对于Friedmann方程中的任意曲率参数$k$,我们得到了带电荷和宇宙学常数的CFT的广义Cardy-Verlinde公式.
Lifshitz-like black branes in arbitrary dimensions and the third law of thermodynamics
Steklov Mathematical Institute, Russian Academy of Sciences(俄罗斯科学院列别杰夫物理研究所);Moscow State University(莫斯科国立大学);Bogoliubov Laboratory of Theoretical Physics, JINR(杜布纳联合核研究所鲍戈留博夫理论物理实验室);Moscow Institute of Physics and Technology(莫斯科物理技术学院)
We present in this work, the calculations of corrections in the Newton's law of gravitation due to Kaluza-Klein gravitons in five-dimensional warped thick braneworld scenarios. We consider here a recently proposed model, namely, the hybrid Bloch brane. This model couples two scalar fields to gravity and is engendered from a domain wall-like defect. Also, two other models the so-called asymmetric hybrid brane and compact brane are considered. As a matter of fact, these models are obtained from deformations of the phi4 and sine-Gordon topological defects. Then, we constructed the branes upon suc…