Phase transition between flat space cosmology and hot flat spacetimes in GMMG and EGMG models
نویسندگان
چکیده
Flat Space Cosmology (FSC) spacetimes are exact solutions of 3D gravity theories. In this work, we study phase transition between FSC and Hot Spacetimes (HFS) in general minimal massive exotic gravity. We show that similar to topological the tunneling occurs two by comparing their free energies. also obtain corrections Bekenstein-Hawking entropy, its effect on is studied.
منابع مشابه
Cosmology in Flat Space-Time
Flat space-time has not heretofore been thought a suitable locus in which to construct model universes because of the presumed necessity of incorporating gravitation in such models and because of the historical lack of a theory of gravitation in flat spacetime. It is here shown that a Lorentz-invariant theory of gravitation can be formulated by incorporating in it the mass-energy relation. Such...
متن کاملCosmic evolution from phase transition of three-dimensional flat space.
Flat space cosmology spacetimes are exact time-dependent solutions of three-dimensional gravity theories, such as Einstein gravity or topologically massive gravity. We exhibit a novel kind of phase transition between these cosmological spacetimes and the Minkowski vacuum. At sufficiently high temperature, (rotating) hot flat space tunnels into a universe described by flat space cosmology.
متن کاملSpinning up asymptotically flat spacetimes
We present a method for constructing stationary, asymptotically flat, rotating solutions of Einstein’s field equations. One of the spun-up solutions has quasilocal mass but no global mass. It has an ergosphere but no event horizon. The angular momentum is constant everywhere beyond the ergosphere. The energy–momentum content of this solution can be interpreted as a rotating string fluid. PACS n...
متن کاملClosed Timelike Curves in Flat Lorentz Spacetimes
We consider the region of closed timelike curves (CTC’s) in three-dimensional flat Lorentz spacetimes. The interest in this global geometrical feature goes beyond the purely mathematical. Such spacetimes may be considered lower-dimensional toy models of sourceless Einstein gravity or cosmology. In three dimensions all such spacetimes are known: they are quotients of Minkowski space by a suitabl...
متن کاملFlat Spacetimes with Compact Hyperbolic Cauchy Surfaces
We study the flat (n+1)-spacetimes Y admitting a Cauchy surface diffeomorphic to a compact hyperbolic n-manifold M . Roughly speaking, we show how to construct a canonical future complete one, Yρ, among all such spacetimes sharing a same holonomy ρ. We study the geometry of Yρ in terms of its canonical cosmological time (CT). In particular we study the asymptotic behaviour of the level surfaces...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2021
ISSN: ['1361-6382', '0264-9381']
DOI: https://doi.org/10.1088/1361-6382/ac03f7