43 citations · 257 across the 18 of their papers we have counts for
18 papers
Evaporating Black Hole Interior and Complexity Evolution
Nicolò Bragagnolo, S. Prem Kumar
We study the evolution of the interior of an evaporating black hole in a simple model of Jackiw-Teitelboim (JT) gravity with an end-of-the-world (EoW) brane, where evaporation is m…
Entanglement Revivals and Scrambling for Evaporating Black Holes
Levy B. N. Batista, Nicolò Bragagnolo, Rhys Holmes +1
We investigate the spreading of entanglement, and entanglement memory effects, in two-dimensional conformal field theory (CFT) propagating on evaporating black hole backgrounds. Me…
Projections and teleportation of operator quenches in CFT
Zsolt Gyongyosi, Timothy J. Hollowood, S. Prem Kumar
Motivated by recent proposals for information recovery from black holes via non-isometric maps and post-selection in an effective description, we set up and investigate a teleporta…
Replica Rényi Wormholes and Generalised Modular Entropy in JT Gravity
Timothy J. Hollowood, S. Prem Kumar, Luke C. Piper
We consider the problem of computing semi-classical Rényi entropies of CFT on AdS backgrounds in JT gravity with nongravitating baths, for general replica number . Away from…
Holographic flows and thermodynamics of Polyakov loop impurities
S. Prem Kumar, Dorian Silvani
We study holographic probes dual to heavy quark impurities interpolating between fundamental and symmetric/antisymmetric tensor representations in strongly coupled N=4 supersymmetr…
Universal corrections to entanglement entropy of local quantum quenches
Justin R. David, Surbhi Khetrapal, S. Prem Kumar
We study the time evolution of single interval Renyi and entanglement entropies following local quantum quenches in two dimensional conformal field theories at finite temperature f…
Quasinormal modes and holographic correlators in a crunching AdS geometry
S. Prem Kumar, Vladislav Vaganov
We calculate frequency space holographic correlators in an asymptotically AdS crunching background, dual to a relevant deformation of the M2-brane CFT placed in de Sitter spacetime…
Probing crunching AdS cosmologies
S. Prem Kumar, Vladislav Vaganov
Holographic gravity duals of deformations of CFTs formulated on de Sitter spacetime contain FRW geometries behind a horizon, with cosmological big crunch singularities. Using a spe…
Partition function of N=2* SYM on a large four-sphere
Timothy J. Hollowood, S. Prem Kumar
We examine the partition function of N=2* supersymmetric SU(N) Yang-Mills theory on the four-sphere in the large radius limit. We point out that the large radius partition function…
Emergent Lifshitz scaling from N=4 SYM with supersymmetric heavy-quark density
Anton F. Faedo, Benjo Fraser, S. Prem Kumar
We consider supersymmetric configurations in Type IIB supergravity obtained by the beackreaction of fundamental strings ending on a stack of D3-branes and smeared uniformly in the…
Supersymmetric Lifshitz-like backgrounds from N=4 SYM with heavy quark density
Anton F. Faedo, Benjo Fraser, S. Prem Kumar
We examine a class of gravity backgrounds obtained by considering the backreaction of a spatially uniform density of mutually BPS Wilson lines or heavy quarks in N=4 SUSY Yang-Mill…
Large rank Wilson loops in N=2 superconformal QCD at strong coupling
Benedict Fraser, S. Prem Kumar
We compute the expectation values of circular Wilson loops in large representations at strong coupling, in the large-N limit of the N=2 superconformal theory with SU(N) gauge group…
Weak coupling large-N transitions at finite baryon density
Timothy J. Hollowood, S. Prem Kumar, Joyce C. Myers
We study thermodynamics of free SU(N) gauge theory with a large number of colours and flavours on a three-sphere, in the presence of a baryon number chemical potential. Reducing th…
Towards holographic walking from N=4 super Yang-Mills
S. Prem Kumar, David Mateos, Angel Paredes +1
We propose that a holographic description of `walking' behaviour, namely quasi-conformal dynamics relevant for technicolor models, can be obtained from relevant deformations of N=4…
Holographic Roberge-Weiss Transitions
Gert Aarts, S. Prem Kumar, James Rafferty
We investigate N=4 SYM coupled to fundamental flavours at nonzero imaginary quark chemical potential in the strong coupling and large N limit, using gauge/gravity duality applied t…
Precision Test of AdS/CFT in Lunin-Maldacena Background
Heng-Yu Chen, S. Prem Kumar
We obtain the solutions and explicitly calculate the energy for a class of two-spin semiclassical string states in the Lunin-Maldacena background. These configurations are β-deform…
An N=1 duality cascade from a deformation of N=4 SUSY Yang-Mills
Timothy J. Hollowood, S. Prem Kumar
We study relevant deformations of an N=1 superconformal theory which is an exactly marginal deformation of U(N) N=4 SUSY Yang-Mills. The resulting theory has a classical Higgs bran…
Massive Vacua of N=1* Theory and S-duality from Matrix Models
Nick Dorey, Timothy J. Hollowood, S. Prem Kumar +1
In this note we show how Dijkgraaf and Vafa's hypothesis relating the exact superpotential of an N=1 theory to a matrix model can be used to describe all the massive vacua of the N…