885 citations · 3.5k across the 45 of their papers we have counts for
15 papers · 1 filter
Large N algebras and generalized entropy
Venkatesa Chandrasekaran, Geoff Penington, Edward Witten
We construct a Type II von Neumann algebra that describes the large physics of single-trace operators in AdS/CFT in the microcanonical ensemble, where there is no need…
A Tale of Two Saddles
Venkatesa Chandrasekaran, Netta Engelhardt, Sebastian Fischetti +1
We find a new on-shell replica wormhole in a computation of the generating functional of JT gravity coupled to matter. We show that this saddle has lower action than the disconnect…
An Algebra of Observables for de Sitter Space
Venkatesa Chandrasekaran, Roberto Longo, Geoff Penington +1
We describe an algebra of observables for a static patch in de Sitter space, with operators gravitationally dressed to the worldline of an observer. The algebra is a von Neumann al…
Quantum Error Correction in SYK and Bulk Emergence
Venkatesa Chandrasekaran, Adam Levine
We analyze the error correcting properties of the Sachdev-Ye-Kitaev model, with errors that correspond to erasures of subsets of fermions. We study the limit where the number of fe…
Brown-York charges at null boundaries
Venkatesa Chandrasekaran, Eanna E. Flanagan, Ibrahim Shehzad +1
The Brown-York stress tensor provides a means for defining quasilocal gravitational charges in subregions bounded by a timelike hypersurface. We consider the generalization of this…
Scattering strings off quantum extremal surfaces
Venkatesa Chandrasekaran, Thomas Faulkner, Adam Levine
We consider a Hayden \& Preskill like setup for both maximally chaotic and sub-maximally chaotic quantum field theories. We act on the vacuum with an operator in a Rindler like wed…
Anomalies in gravitational charge algebras of null boundaries and black hole entropy
Venkatesa Chandrasekaran, Antony J. Speranza
We revisit the covariant phase space formalism applied to gravitational theories with null boundaries, utilizing the most general boundary conditions consistent with a fixed null n…
Gravity Dual of Connes Cocycle Flow
Raphael Bousso, Venkatesa Chandrasekaran, Pratik Rath +1
We define the "kink transform" as a one-sided boost of bulk initial data about the Ryu-Takayanagi surface of a boundary cut. For a flat cut, we conjecture that the resulting Wheele…
Islands for Reflected Entropy
Venkatesa Chandrasekaran, Masamichi Miyaji, Pratik Rath
Recent work has demonstrated the need to include contributions from entanglement islands when computing the entanglement entropy in QFT states coupled to regions of semiclassical g…
Entropy Variations and Light Ray Operators from Replica Defects
Srivatsan Balakrishnan, Venkatesa Chandrasekaran, Thomas Faulkner +2
We study the defect operator product expansion (OPE) of displacement operators in free and interacting conformal field theories using replica methods. We show that as approache…
Ignorance is Cheap: From Black Hole Entropy To Energy-Minimizing States In QFT
Raphael Bousso, Venkatesa Chandrasekaran, Arvin Shahbazi-Moghaddam
Behind certain marginally trapped surfaces one can construct a geometry containing an extremal surface of equal, but not larger area. This construction underlies the Engelhardt-Wal…
Symmetries and charges of general relativity at null boundaries
Venkatesa Chandrasekaran, Eanna E. Flanagan, Kartik Prabhu
We study general relativity at a null boundary using the covariant phase space formalism. We define a covariant phase space and compute the algebra of symmetries at the null bounda…
Higher-Point Positivity
Venkatesa Chandrasekaran, Grant N. Remmen, Arvin Shahbazi-Moghaddam
We consider the extension of techniques for bounding higher-dimension operators in quantum effective field theories to higher-point operators. Working in the context of theories po…
Asymptotic Charges Cannot Be Measured in Finite Time
Raphael Bousso, Venkatesa Chandrasekaran, Illan F. Halpern +1
To study quantum gravity in asymptotically flat spacetimes, one would like to understand the algebra of observables at null infinity. Here we show that the Bondi mass cannot be obs…
The Quantum Null Energy Condition, Entanglement Wedge Nesting, and Quantum Focusing
Chris Akers, Venkatesa Chandrasekaran, Stefan Leichenauer +2
We study the consequences of Entanglement Wedge Nesting for CFTs with holographic duals. The CFT is formulated on an arbitrary curved background, and we include the effects of curv…