scholarly journals Black hole singularities across phase transitions

2021 ◽  
Vol 2021 (10) ◽  
Author(s):  
Yan Liu ◽  
Hong-Da Lyu ◽  
Avinash Raju
Keyword(s):  
Field Theory ◽  
Black Hole ◽  
Phase Transitions ◽  
Second Order ◽  
Scalar Theory ◽  
First Order ◽  
First Order Phase

Abstract We study the behavior of black hole singularities across the Hawking-Page phase transitions, uncovering possible connections between the physics inside and outside the horizon. We focus on the case of spacelike singularities in Einstein-scalar theory which are of the Kasner form. We find that the Kasner exponents are continuous and non-differentiable during the second order phase transitions, while discontinuous in the first order phase transitions. We give some arguments on the universality of this behavior. We also discuss possible observables in the dual field theory which encode the Kasner exponents.

scholarly journals Cosmological phase transitions: is effective field theory just a toy?

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Marieke Postma ◽  
Graham White
Keyword(s):  
Field Theory ◽  
Phase Transition ◽  
Phase Transitions ◽  
Effective Field Theory ◽  
New Physics ◽  
Effective Field ◽  
Tree Level ◽  
Dark Sector ◽  
First Order ◽  
First Order Phase

Abstract To obtain a first order phase transition requires large new physics corrections to the Standard Model (SM) Higgs potential. This implies that the scale of new physics is relatively low, raising the question whether an effective field theory (EFT) description can be used to analyse the phase transition in a (nearly) model-independent way. We show analytically and numerically that first order phase transitions in perturbative extensions of the SM cannot be described by the SM-EFT. The exception are Higgs-singlet extension with tree-level matching; but even in this case the SM-EFT can only capture part of the full parameter space, and if truncated at dim-6 operators, the description is at most qualitative. We also comment on the applicability of EFT techniques to dark sector phase transitions.

scholarly journals Geometric Curvatures of Plane Symmetry Black Hole

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Shao-Wen Wei ◽  
Yu-Xiao Liu ◽  
Chun-E. Fu ◽  
Hai-Tao Li
Keyword(s):  
Phase Transition ◽  
Black Hole ◽  
Order Phase Transition ◽  
Semiclassical Approximation ◽  
Second Order ◽  
Plane Symmetry ◽  
First Order ◽  
First Order Phase Transition ◽  
Transition Points ◽  
First Order Phase

We study the properties and thermodynamic stability of the plane symmetry black hole from the viewpoint of geometry. We find that the Weinhold curvature gives the first-order phase transition atN=1, whereNis a parameter of the plane symmetry black hole while the Ruppeiner one shows first-order phase transition points for arbitraryN≠1. Considering the Legendre invariant proposed by Quevedo et al., we obtain a unified geometry metric, which contains the information of the second-order phase transition. So, the first-order and second-order phase transitions can be both reproduced from the geometry curvatures. The geometry is also found to be curved, and the scalar curvature goes to negative infinity at the Davie phase transition points beyond semiclassical approximation.

scholarly journals To a Question about First-Order Phase Transitions in Orthoferrites

2016 ◽  
Vol 17 (2) ◽  
pp. 193-197
Author(s):  
O.G. Medvedovs’ka ◽  
G.K. Chepurnykh ◽  
T.O. Fedorenko ◽  
S.V. Sokolov
Keyword(s):  
Magnetic Field ◽  
Phase Transitions ◽  
External Magnetic Field ◽  
Landau Theory ◽  
Second Order ◽  
First Order ◽  
First Order Phase

On the example of first-order phase transitions in orthoferrites under the influence of an external magnetic field is shown the effectiveness of the application of the Landau theory of phase transitions, commonly used in second-order phase transitions. This is especially important when used Hamiltonian is a function of many variables.

Investigation of Phase Transitions in the Site-Diluted Three-Dimensional Potts Model

2012 ◽  
Vol 190 ◽  
pp. 687-690
Author(s):  
A.K. Murtazaev ◽  
A.B. Babaev
Keyword(s):  
Phase Transitions ◽  
Potts Model ◽  
Three Dimensional ◽  
Finite Size ◽  
Correlation Radius ◽  
Second Order ◽  
First Order ◽  
Nonmagnetic Impurities ◽  
Wolff Algorithm ◽  
First Order Phase

The phase transitions and critical phenomena in three-dimensional (3D) site-diluted 3-and 4-state Potts models is investigated by Monte-Carlo method based on the highly efficient Wolff algorithm. The systems with linear sizesL=20-44 at spin concentrationsp=1.00, 0.95, 0.90, 0.80, 0.70, 0.65 are explored. The second-order phase transition is shown to occur in the three-dimensional 3-state Potts model with nonmagnetic impurities. In the 4-state Potts model there are observed first-order phase transitions in weakly diluted state, when the model is strongly diluted the first-order phase transitions change to the second-order one. On the basis of the finite-size scaling theory static critical exponents of specific heatα, susceptibilityγ, magnetizationβ, and exponent of correlation radiusνfor the systems under study are calculated.

scholarly journals Phase Transitions of GUP-Corrected Charged AdS Black Hole

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Meng-Sen Ma ◽  
Yan-Song Liu
Keyword(s):  
Black Hole ◽  
Free Energy ◽  
Phase Transitions ◽  
Equation Of State ◽  
Thermodynamic Properties ◽  
Critical Points ◽  
Generalized Uncertainty Principle ◽  
First Order ◽  
First Order Phase ◽  
Horizon Case

We study the thermodynamic properties and critical behaviors of the topological charged black hole in AdS space under the consideration of the generalized uncertainty principle (GUP). It is found that only in the spherical horizon case there are Van der Waals-like first-order phase transitions and reentrant phase transitions. From the equation of state we find that the GUP-corrected black hole can have one, two, and three apparent critical points under different conditions. However, it is verified by the Gibbs free energy that in either case there is at most one physical critical point.

Sign in / Sign up

Export Citation Format

Share Document