نتایج جستجو برای: lovelock gravity

تعداد نتایج: 63127  

Journal: :Classical and Quantum Gravity 2023

Abstract The generalisation of Birkhoff’s theorem to higher dimensions in Lovelock gravity allows for black hole solutions with horizon geometries non-constant curvature. We investigate thermodynamic aspects these ‘exotic’ solutions, a particular emphasis on their phase transitions. consider an extended space where the cosmological constant acts as pressure, and examine both uncharged U (1) cha...

Journal: :Chinese Journal of Physics 2023

It is generally believed that wormholes are supported by exotic matter violating Null Energy Condition (NEC). However, various studies of wormhole geometries under Lovelock theories gravity have reported existence satisfying NEC. Being inspired these results, we explore the possibility normal quark in third order theory. Well known MIT Bag Model Equation state chosen for describing matter. Taki...

Journal: :Annals of Physics 2023

In this paper, we show that the holographic dark energy density hides in solutions of Lovelock gravity for black holes. Using obtained mass and temperature find equations. We propose a physical interpretation rescaled couplings as topological describes branch. addition to this, present new satisfy conditions according coupling horizon curvatures. This work can be extended equation state {\omega...

2004
Ignacio Navarro Jose Santiago

We study the matching conditions of intersecting brane worlds in Lovelock gravity in arbitrary dimension. We show that intersecting various codimension 1 and/or codimension 2 branes one can find solutions that represent energymomentum densities localized in the intersection, providing thus the first examples of infinitesimally thin higher codimension braneworlds that are free of singularities a...

2006
M. Akbar Rong - Gen Cai

It is shown that the differential form of Friedmann equations of a FRW universe can be rewritten as a thermodynamical identity T dS = dE + P dV at apparent horizon, where E is the Misner-Sharp energy, V is the volume inside the apparent horizon, and P is the pressure of the perfect fluid in the universe. From the thermodynamic identity one can derive that the apparent horizoñ r A has associated...

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