Results 81 to 90 of about 186,264 (366)

Instabilities of Black Strings and Branes [PDF]

, 2007
We review recent progress on the instabilities of black strings and branes both for pure Einstein gravity as well as supergravity theories which are relevant for string theory. We focus mainly on Gregory-Laflamme instabilities.
Aharony O, Aharony O, Aharony O, Aharony O, Aharony O, Alishahiha M, Arcioni G Lozano-Tellechea E, Asnin V, Berkooz M, Buchel A, Cai R-G, Cardoso V, Cardoso V, Chu Y-Z, Connes A, Copsey K, Creek S, Damour T, De Smet P-J, Dias O Harmark T Myers R Obers N, Douglas M R, Elvang H, Elvang H, Elvang H, Emparan R, Emparan R, Emparan R, Emparan R, Emparan R, Fidkowski L Shenker S, Fitzpatrick A L Randall L Wiseman T, Friess J J, Gibbons G W, Gopakumar R, Gopakumar R, Gorbonos D, Gorbonos D, Greene B R, Gregory R, Gubser S S, Gubser S S, Gubser S S, Gubser S S, Gubser S S Mitra I, Harmark T, Harmark T, Harmark T, Harmark T, Harmark T, Harmark T, Harmark T, Harmark T, Harmark T, Harmark T Kristjansson K R Obers N A Ronne P B, Harmark T Obers N A, Hartnoll S A, Hawking S W, Headrick M, Helfgott C, Hollands S Ishibashi A Wald R M, Hollowood T, Horowitz G T, Horowitz G T, Hubeny V E, Jeans J H, Kang G, Kang G, Kang G Lee Y, Kastor D, Kleihaus B, Kol B, Kol B, Kol B, Kol B, Kol B, Kol B, Kol B, Kol B, Korotkin D Nicolai H, Kovtun P, Kudoh H, Kutasov D, Kutasov D, Landau L, Maldacena J M, Maldacena J M, Maldacena J M, Mann R B, Martinec E J, Mathur S D, Milnor J, Miyamoto U, Narayan K, Niarchos V, Niels A Obers, Park M-I, Parnachev A, Pioline B, Rangamani M, Ross S F, Seiberg N, Seiberg N, Starobinsky A A, Starobinsky A A, Susskind L, Tangherlini F R, Thorne K S, Townsend P K, Traschen J H, Traschen J H, Troels Harmark, Vasilis Niarchos, Wiseman T, Wiseman T, Witten E, Witten E, Yoshida S, Zel'dovich Y B, Zel'dovich Y B   +118 more
core   +4 more sources

Non-relativistic geometry of holographic screens

Journal of High Energy Physics, 2017
We propose that the intrinsic geometry of holographic screens should be described by the Newton-Cartan geometry. As a test of this proposal, we show that the evolution equations of the screen can be written in a covariant form in terms of a stress tensor,
Mudassir Moosa
doaj   +1 more source

Classical and Quantum Aspects of Infinite Derivative Field Theories and Infinite Derivative Gravity

, 2017
The objective of this thesis is to study classical and quantum aspects of infinite derivative field theories and infinite derivative gravity. In- finite derivative theories of gravity can be made free from ghosts and classical singularities. In order to avoid ghosts, one modifies the graviton propagator by employing entire functions so that no new ...
Spyridon Talaganis
openalex   +2 more sources

Topological M-theory as unification of form theories of gravity [PDF]

, 2004
We introduce a notion of topological M-theory and argue that it provides a unification of form theories of gravity in various dimensions. Its classical solutions involve G_2 holonomy metrics on 7-manifolds, obtained from a topological action for a 3-form
R. Dijkgraaf, S. Gukov, Andrew Neitzke, C. Vafa   +3 more
semanticscholar   +1 more source

Wave propagation in 2D between two elastic media in contact in theory of generalized two-temperature thermoelasticity with gravity effect

Archives of Thermodynamics, 2023
The theory of generalized two-temperature thermoelasticity is used to solve the boundary value problems between two elastic media with two different types of temprature under the influence of gravity.The classical dynamical coupled theory and Lord ...
K. Lotfy, M. Gabr
semanticscholar   +1 more source

Small free field inflation in higher curvature gravity

Journal of High Energy Physics, 2021
Within General Relativity, a minimally coupled scalar field governed by a quadratic potential is able to produce an accelerated expansion of the universe provided its value and excursion are larger than the Planck scale.
José D. Edelstein, Robert B. Mann, David Vázquez Rodríguez, Alejandro Vilar López   +3 more
doaj   +1 more source

Viability of vector-tensor theories of gravity [PDF]

, 2008
We present a detailed study of the viability of general vector-tensor theories of gravity in the presence of an arbitrary temporal background vector field.
J. B. Jiménez, A. L. Maroto
semanticscholar   +1 more source

Black Holes, Entropy Bound and Causality Violation

, 2009
The gravity/gauge theory duality has provided us a way of studying QCD at short distances from straightforward calculations in classical general relativity. Among numerous results obtained so far, one of the most striking is the universality of the ratio
Ge X. H., Hofman D. M., I. P. NEUPANE
core   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source

An étude on global vacuum energy sequester

Journal of High Energy Physics, 2017
Recently two of the authors proposed a mechanism of vacuum energy sequester as a means of protecting the observable cosmological constant from quantum radiative corrections.
Guido D’Amico, Nemanja Kaloper, Antonio Padilla, David Stefanyszyn, Alexander Westphal, George Zahariade   +5 more
doaj   +1 more source