Results 111 to 120 of about 812,429 (344)
Probing Palatini-type gravity theories through gravitational wave detections via quasinormal modes
European Physical Journal C: Particles and Fields, 2019 The possibility of testing gravity theories with the help of gravitational wave detections has become an interesting arena of recent research.
Che-Yu Chen +2 more
doaj +1 more source
Geometry of Black Holes and Multi-Black-Holes in 2+1 dimensions [PDF]
arXiv, 1996 Lecture given at ``Raychaudhuri session," ICGC-95 conference, Pune (India), December 1995. Contents: I. Introduction II. (2+1)-Dimensional Initial Values in Stereographic Projection A. The single, non-rotating black hole B. Non-rotating multi-black-holes C. ``Black Hole" Universe Initial Values III.
arxiv
Phase transitions and Geometrothermodynamics of Regular black holes [PDF]
, 2014 In this paper we study the thermodynamics and state space geometry of regular black hole solutions such as Bardeen black hole, Ay\'{o}n-Beato and Garc\'{i}a black hole, Hayward black hole and Berej-Matyjasek-Trynieki-Wornowicz black hole. We find that all these black holes show second order thermodynamic phase transitions(SOTPT) by observing ...
arxiv +1 more source
Advanced Functional Materials, EarlyView.This work presents an overview of the PTC‐VMD system for water‐hydrogen co‐generation. a) Illustration of the hydrogel‐based PTC membrane and the co‐generation of water and hydrogen. b) Structure of the PTC‐VMD system and the functions of each component layer.
Jiawei Sun +7 more
wiley +1 more source
Hairy black holes of Lovelock–Born–Infeld-scalar gravity
Physics Letters B, 2018 In this paper we construct new hairy black holes of Lovelock–Born–Infeld-scalar gravity in diverse dimensions. We study horizon structures of the black holes and find the black holes may possess three horizons, two horizons or one horizon.
Kun Meng
doaj
State-space Geometry, Statistical Fluctuations and Black Holes in String Theory
, 2011 We study the state-space geometry of various extremal and nonextremal black holes in string theory. From the notion of the intrinsic geometry, we offer a new perspective of black hole vacuum fluctuations.
Bellucci, Stefano +1 more
core
Research in Astronomy and Astrophysics, 2010 Invited contribution to Recent Advances on the Physics of Compact Objects and Grvitational Waves, 2007, Ed.
openaire +7 more sources
Advanced Functional Materials, EarlyView.Ferroelectric ZrO2 films grown by sputtering on Si, show strong near‐infrared (NIR) detection capability. The performance is shown to arise from the pyroelectric effect, combined with the ferroelectric effect in ZrO2, and the photovoltaic effect in Si.
Nuno E. Silva +13 more
wiley +1 more source
Entropy of black holes with multiple horizons
Nuclear Physics B, 2018 We examine the entropy of black holes in de Sitter space and black holes surrounded by quintessence. These black holes have multiple horizons, including at least the black hole event horizon and a horizon outside it (cosmological horizon for de Sitter ...
Yun He, Meng-Sen Ma, Ren Zhao
doaj
Are “Superentropic” black holes superentropic?
Journal of High Energy Physics, 2020 We study a critical limit in which asymptotically-AdS black holes develop maximal conical deficits and their horizons become non-compact. When applied to stationary rotating black holes this limit coincides with the “ultraspinning limit” and yields the ...
Michael Appels +4 more
doaj +1 more source