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23 papers · 2 filters
Holographic thermal correlators: A tale of Fuchsian ODEs and integration contours
R. Loganayagam, Mukund Rangamani, Julio Virrueta
We analyze real-time thermal correlation functions of conserved currents in holographic field theories using the grSK geometry, which provides a contour prescription for their eval…
Entanglement Entropy in Internal Spaces and Ryu-Takayanagi Surfaces
Sumit R. Das, Anurag Kaushal, Gautam Mandal +3
We study minimum area surfaces associated with a region, , of an internal space. For example, for a warped product involving an asymptotically space and an internal space…
Holographic entanglement entropy for relativistic hydrodynamic flows
Jyotirmoy Bhattacharya, Parthajit Biswas, A. Chandranathan +1
We study the behaviour of holographic entanglement entropy (HEE) in near equilibrium thermal states which are macroscopically described by conformal relativistic hydrodynamic flows…
Holographic open quantum systems: Toy models and analytic properties of thermal correlators
R. Loganayagam, Mukund Rangamani, Julio Virrueta
We present a unified picture of open quantum systems, the theory of a system probing a noisy thermal environment, distilling lessons learnt from previous holographic analyses. Our…
Crossing Symmetry in Matter Chern-Simons Theories at finite and
Umang Mehta, Shiraz Minwalla, Chintan Patel +2
We present a conjecture for the crossing symmetry rules for Chern-Simons gauge theories interacting with massive matter in dimensions. Our crossing rules are given in terms o…
A Microscopic Model of Black Hole Evaporation in Two Dimensions
Adwait Gaikwad, Anurag Kaushal, Gautam Mandal +1
We present a microscopic model of black hole (BH) `evaporation' in asymptotically spacetimes dual to the low energy sector of the SYK model. To describe evaporation, the SY…
Generalized BMS algebra in higher even dimensions
Chandramouli Chowdhury, Anupam A. H., Arpan Kundu
We revisit the status of asymptotic symmetries in higher even dimensions and propose a definition of superrotation charge beyond linearized gravity. We prove that there is a well-d…
Entropy Current and Fluid-Gravity Duality in Gauss-Bonnet theory
Chandranathan A, Sayantani Bhattacharyya, Milan Patra +1
Working within the approximation of small amplitude expansion, recently an entropy current has been constructed on the horizons of dynamical black hole solution in any higher deriv…
Jackiw-Teitelboim Gravity from the Karch-Randall Braneworld
Hao Geng, Andreas Karch, Carlos Perez-Pardavila +4
In this letter, we show that Jackiw-Teitelboim (JT) gravity can be naturally realized in the Karch-Randall braneworld. Notably the role of the dilaton in JT gravity is played by th…
A new multi-partite entanglement measure and its holographic dual
Abhijit Gadde, Vineeth Krishna, Trakshu Sharma
In this letter we define a natural generalization of the von Neumann entropy to multiple parties that is symmetric with respect to all the parties. We call this measure multi-entro…
A CFT interpretation of cosmological correlation functions in vacua in de-Sitter space
Sachin Jain, Nilay Kundu, Suman Kundu +2
de-Sitter(dS) space allows for a generalized class of vacua, known as vacua, described by some parameters. The Bunch-Davies (BD) vacua is a point in this parameter space. The c…
A Scattering Amplitude for Massive Particles in AdS
Abhijit Gadde, Trakshu Sharma
In this paper, we propose a conformally covariant momentum space representation of CFT correlation functions. We call it the AdS S-matrix. This representation has the property that…
An effective description of charge diffusion and energy transport in a charged plasma from holography
Temple He, R. Loganayagam, Mukund Rangamani +1
We discuss the physics of sound propagation and charge diffusion in a plasma with non-vanishing charge density. Our analysis culminates the program initiated in arXiv:2108.03244 to…
Quantum Error Correction in the Black Hole Interior
Vijay Balasubramanian, Arjun Kar, Cathy Li +1
We study the quantum error correction properties of the black hole interior in a toy model for an evaporating black hole: Jackiw-Teitelboim gravity entangled with a non-gravitation…
Euclidean-to-Lorentzian wormhole transition and gravitational symmetry breaking in the Sachdev-Ye-Kitaev model
Antonio M. García-García, Victor Godet, Can Yin +1
We study a two-site Sachdev-Ye-Kitaev model with complex couplings and a weak inter-site interaction. At low temperatures, the system is dual to a Euclidean wormhole in Jackiw-Teit…
Entanglement in interacting quenched two-body coupled oscillator system
Sayantan Choudhury, Rakshit Mandish Gharat, Saptarshi Mandal +3
In this work, we explore the effects of a quantum quench on the entanglement measures of a two-body coupled oscillator system having quartic interaction. We use the invariant opera…
Krylov Complexity in Quantum Field Theory
Kiran Adhikari, Sayantan Choudhury, Abhishek Roy
In this paper, we study the Krylov complexity in quantum field theory and make a connection with the holographic "Complexity equals Volume" conjecture. When Krylov basis matches wi…
Recovering information in an asymptotically flat spacetime in quantum gravity
Chandramouli Chowdhury, Olga Papadoulaki
As an extension of arXiv:\{2002.02448, 2008.10740\} we present a physical protocol that a set of observers can use to detect a pure state in the bulk when they are spread across a…
Cosmological Krylov Complexity
Kiran Adhikari, Sayantan Choudhury
In this paper, we study the Krylov complexity () from the planar/inflationary patch of the de Sitter space using the two mode squeezed state formalism in the presence of an effe…
Light transformed gluon correlators in CCFT
Sourish Banerjee, Rudranil Basu, Sayali Atul Bhatkar
In the present work, we study celestial correlators of light transformed gluon operators at tree level. We also discuss the transformation of light transformed operators under the…
The timbre of Hawking gravitons: an effective description of energy transport from holography
Temple He, R. Loganayagam, Mukund Rangamani +2
Planar black holes in AdS, which are holographically dual to compressible relativistic fluids, have a long-lived phonon mode that captures the physics of attenuated sound propagati…
Aspects of Jackiw-Teitelboim Gravity in Anti-de Sitter and de Sitter spacetime
Upamanyu Moitra, Sunil Kumar Sake, Sandip P. Trivedi
We discuss JT gravity in AdS and dS space in the second order formalism. For the pure dS JT theory without matter, we show that the path integral gives rise in general to the Hartl…
The Hilbert Space of large Chern-Simons matter theories
Shiraz Minwalla, Amiya Mishra, Naveen Prabhakar +1
We demonstrate that the known expressions for the thermal partition function of large Chern-Simons matter theories admit a simple Hilbert space interpretation as the partition…