75 citations · 286 across the 16 of their papers we have counts for
9 papers · 1 filter
A single geometry from an all-genus expansion in quantum gravity
Sergio Hernández-Cuenca, Nico Valdes-Meller, Wayne Wei-en Weng
We report on an instance in quantum gravity where a topological expansion resums into an effective description on a single geometry. The original theory whose gravitational path in…
Wormholes and Factorization in Exact Effective Theory
Sergio Hernández-Cuenca
We study the general framework of effective theories obtained via exact path integration of a complete theory over some sector of its degrees of freedom. Theories constructed this…
Holographic Entropy Inequalities and Multipartite Entanglement
Sergio Hernández-Cuenca, Veronika E. Hubeny, Frederic Jia
We study holographic entropy inequalities and their structural properties by making use of a judicious grouping of terms into certain multipartite information quantities. This allo…
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…
The holographic entropy cone from marginal independence
Sergio Hernández-Cuenca, Veronika E. Hubeny, Massimiliano Rota
The holographic entropy cone characterizes the relations between entanglement entropies for a spatial partitioning of the boundary spacetime of a holographic CFT in any state descr…
Quantum Extremal Surfaces and the Holographic Entropy Cone
Chris Akers, Sergio Hernández-Cuenca, Pratik Rath
Quantum states with geometric duals are known to satisfy a stricter set of entropy inequalities than those obeyed by general quantum systems. The set of allowed entropies derived u…
Boundary Causality Violating Metrics in Holography
Sergio Hernández-Cuenca, Gary T. Horowitz, Gabriel Treviño +1
Even for holographic theories that obey boundary causality, the full bulk Lorentzian path integral includes metrics that violate this condition. This leads to the following puzzle:…
Bulk reconstruction of metrics with a compact space asymptotically
Sergio Hernández-Cuenca, Gary T. Horowitz
Holographic duality implies that the geometric properties of the gravitational bulk theory should be encoded in the dual field theory. These naturally include the metric on dimensi…
The Holographic Entropy Cone for Five Regions
Sergio Hernández-Cuenca
Even though little is known about the quantum entropy cone for subsystems, holographic techniques allow one to get a handle on the subspace of entropy vectors correspondin…