Results 1  10
of
99
Phase transitions near black hole horizons,” arXiv:hepth/0505189
"... The ReissnerNordstrom black hole in four dimensions can be made unstable without violating the dominant energy condition by introducing a real massive scalar with nonrenormalizable interactions with the gauge field. New stable black hole solutions then exist with greater entropy for fixed mass and ..."
Abstract

Cited by 41 (6 self)
 Add to MetaCart
(Show Context)
The ReissnerNordstrom black hole in four dimensions can be made unstable without violating the dominant energy condition by introducing a real massive scalar with nonrenormalizable interactions with the gauge field. New stable black hole solutions then exist with greater entropy for fixed mass and charge than the ReissnerNordstrom solution. In these new solutions, the scalar condenses to a nonzero value near the horizon. Various generalizations of these hairy black holes are discussed, and an attempt is made to characterize when black hole hair can occur.
Domain Wall Holography for Finite Temperature Scaling Solutions
 JHEP
"... We investigate a class of nearextremal solutions of EinsteinMaxwellscalar theory with electric charge and power law scaling, dual to charged IR phases of relativistic field theories at low temperature. These are exact solutions of theories with domain wall vacua; hence, we use nonconformal hologr ..."
Abstract

Cited by 33 (1 self)
 Add to MetaCart
(Show Context)
We investigate a class of nearextremal solutions of EinsteinMaxwellscalar theory with electric charge and power law scaling, dual to charged IR phases of relativistic field theories at low temperature. These are exact solutions of theories with domain wall vacua; hence, we use nonconformal holography to relate the bulk and boundary theories. We numerically construct a global interpolating solution between the IR charged solutions and the UV domain wall vacua for arbitrary physical choices of Lagrangian parameters. By passing to a conformal frame in which the domain wall metric becomes that of AdS, we uncover a generalized scale invariance of the IR scaling solution, indicating a connection to the physics of Lifshitz fixed points. Finally, guided by effective field theoretic principles and the physics of nonconformal Dbranes, we argue for the applicability of domain wall holography even in theories with AdS critical points, namely those theories for which a scalar potential is dominated by a single exponential term over a large range.
Holographic quantum criticality from multitrace deformations
"... We explore the consequences of multitrace deformations in applications of gaugegravity duality to condensed matter physics. We find that they introduce a powerful new “knob ” that can implement spontaneous symmetry breaking, and can be used to construct a new type of holographic superconductor. Th ..."
Abstract

Cited by 26 (3 self)
 Add to MetaCart
(Show Context)
We explore the consequences of multitrace deformations in applications of gaugegravity duality to condensed matter physics. We find that they introduce a powerful new “knob ” that can implement spontaneous symmetry breaking, and can be used to construct a new type of holographic superconductor. This knob can be tuned to drive the critical temperature to zero, leading to a new quantum critical point. We calculate nontrivial critical exponents, and show that fluctuations of the order parameter are ‘locally ’ quantum critical in the disordered phase. Most notably the dynamical critical exponent is determined by the dimension of an operator at the critical point. We argue that the results are robust against quantum corrections and discuss various generalizations. ar X iv
Holography for chiral scaleinvariant models
 JHEP 1102 (2011) 082, arXiv:1010.4800 [hepth
"... ar ..."
(Show Context)
The Cosmological Constant Problem from a BraneWorld Perspective
, 2000
"... We point out several subtleties arising in braneworld scenarios of cosmological constant cancellation. We show that solutions with curvature singularities are inconsistent, unless the contribution to the effective fourdimentional cosmological constant of the physics that resolves the singularities ..."
Abstract

Cited by 20 (5 self)
 Add to MetaCart
We point out several subtleties arising in braneworld scenarios of cosmological constant cancellation. We show that solutions with curvature singularities are inconsistent, unless the contribution to the effective fourdimentional cosmological constant of the physics that resolves the singularities is finetuned. This holds for both flat and curved branes. Irrespective of this problem, we then study an isolated class of flat solutions in models where a bulk scalar field with a vanishing potential couples to a 3brane. We give an example where the introduction of a bulk scalar potential results in a nonzero cosmological constant. Finally we comment on the With the discovery of string dualities it became clear that extended objects (branes) are built into any string theory. In the form of Dbranes [1] they first served as tools in addressing conceptual questions of string theory (e.g. dualities, black hole entropy, holography). An interesting property of Dbranes is that they provide a natural picture for having some fields (typically
FRW solutions and holography from uplifted AdS/CFT, arXiv:1108.5732
, 2000
"... Starting from concrete AdS/CFT dual pairs, one can introduce ingredients which produce cosmological solutions, including metastable de Sitter and its decay to nonaccelerating FRW. We present simple FRW solutions sourced by magnetic flavor branes and analyze correlation functions and particle and bra ..."
Abstract

Cited by 18 (7 self)
 Add to MetaCart
(Show Context)
Starting from concrete AdS/CFT dual pairs, one can introduce ingredients which produce cosmological solutions, including metastable de Sitter and its decay to nonaccelerating FRW. We present simple FRW solutions sourced by magnetic flavor branes and analyze correlation functions and particle and brane dynamics. To obtain a holographic description, we exhibit a timedependent warped metric on the solution and interpret the resulting redshifted region as a Lorentzian low energy effective field theory in one fewer dimension. At finite times, this theory has a finite cutoff, a propagating lower dimensional graviton and a finite covariant entropy bound, but at late times the lower dimensional Planck mass and entropy go off to infinity in a way that is dominated by contributions from the low energy effective theory. This opens up the possibility of a precise dual at late times. We reproduce the timedependent growth of the number of degrees of freedom in the system via a count of available microscopic states in the corresponding magnetic brane construction. Work supported in part by US Department of Energy contract DEAC0276SF00515. Contents
Supersymmetric domain walls and strings in D = 5 gauged supergravity coupled to vector multiplets,” JHEP 0303
, 2003
"... We present new supersymmetric domain wall and string solutions of fivedimensional N = 2 gauged supergravity coupled to an arbitrary number of vector multiplets. Using the techniques of very special geometry allows to obtain the most general domain wall preserving half of the supersymmetries. This s ..."
Abstract

Cited by 16 (2 self)
 Add to MetaCart
(Show Context)
We present new supersymmetric domain wall and string solutions of fivedimensional N = 2 gauged supergravity coupled to an arbitrary number of vector multiplets. Using the techniques of very special geometry allows to obtain the most general domain wall preserving half of the supersymmetries. This solution, which describes a renormalization group flow in the dual field theory, is given in terms of Weierstrass elliptic functions. The magnetically charged, one quarter supersymmetric string solutions are shown to be closely related to Liouville theory. We furthermore investigate general product space compactifications, and show that topological transitions from AdS3 × S 2 to AdS3 × H 2 can occur when one moves in moduli space.
Universality classes for horizon instabilities
, 2003
"... Abstract: We introduce a notion of universality classes for the GregoryLaflamme instability and determine, in the supergravity approximation, the stability of a variety of solutions, including the nonextremal D3brane, M2brane, and M5brane. These three nondilatonic branes cross over from instab ..."
Abstract

Cited by 14 (1 self)
 Add to MetaCart
(Show Context)
Abstract: We introduce a notion of universality classes for the GregoryLaflamme instability and determine, in the supergravity approximation, the stability of a variety of solutions, including the nonextremal D3brane, M2brane, and M5brane. These three nondilatonic branes cross over from instability to stability at a certain nonextremal mass. Numerical analysis suggests that the wavelength of the shortest unstable mode diverges as one approaches the crossover point from above, with a simple critical exponent which is the same in all three cases. JHEP05(2003)010
Black hole statistics from holography,” JHEP 0510
, 2005
"... We study the microstates of the “small ” black hole in the 1 2BPS sector of AdS5 × S 5, the superstar [1], using the powerful holographic description provided by LLM [2]. The system demonstrates the inherently statistical nature of black holes, with the geometry of [1] emerging only after averaging ..."
Abstract

Cited by 13 (0 self)
 Add to MetaCart
(Show Context)
We study the microstates of the “small ” black hole in the 1 2BPS sector of AdS5 × S 5, the superstar [1], using the powerful holographic description provided by LLM [2]. The system demonstrates the inherently statistical nature of black holes, with the geometry of [1] emerging only after averaging over an ensemble of geometries. The individual microstate geometries differ in the highly nontrivial topology of a quantum foam at their core, and the entropy can be understood as a partition of N units of flux among 5cycles, as required by flux quantization. While the system offers confirmation of the most controversial aspect of Mathur and Lunin’s By defining a full quantummechanical description of gravity in terms of a dual gauge theory, holography is expected to provide resolution to many outstanding questions in general relativity. However, since it is often very difficult to construct both sides of the duality, many questions have been slow in revealing their mysteries. A beautiful recent work by Lin, Lunin and Maldacena [2] has