75 citations · 286 across the 16 of their papers we have counts for
16 papers
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…
The Symmetrized Holographic Entropy Cone
Matteo Fadel, Sergio Hernández-Cuenca
The holographic entropy cone (HEC) characterizes the entanglement structure of quantum states which admit geometric bulk duals in holography. Due to its intrinsic complexity, to da…
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…
Topological Link Models of Multipartite Entanglement
Ning Bao, Newton Cheng, Sergio Hernández-Cuenca +1
We introduce a novel model of multipartite entanglement based on topological links, generalizing the graph/hypergraph entropy cone program. We demonstrate that there exist link rep…
Conformal Rigidity from Focusing
Åsmund Folkestad, Sergio Hernández-Cuenca
The null curvature condition (NCC) is the requirement that the Ricci curvature of a Lorentzian manifold be nonnegative along null directions, which ensures the focusing of null geo…
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:…
On the foundations and extremal structure of the holographic entropy cone
David Avis, Sergio Hernández-Cuenca
The holographic entropy cone (HEC) is a polyhedral cone first introduced in the study of a class of quantum entropy inequalities. It admits a graph-theoretic description in terms o…
A Gap Between the Hypergraph and Stabilizer Entropy Cones
Ning Bao, Newton Cheng, Sergio Hernández-Cuenca +1
It was recently found that the stabilizer and hypergraph entropy cones coincide for four parties, leading to a conjecture of their equivalence at higher party numbers. In this note…
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 Quantum Entropy Cone of Hypergraphs
Ning Bao, Newton Cheng, Sergio Hernández-Cuenca +1
In this work, we generalize the graph-theoretic techniques used for the holographic entropy cone to study hypergraphs and their analogously-defined entropy cone. This allows us to…
The quantum marginal independence problem
Sergio Hernández-Cuenca, Veronika E. Hubeny, Mukund Rangamani +1
We investigate whether the presence or absence of correlations between subsystems of an N-partite quantum system is solely constrained by the non-negativity and monotonicity of mut…
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…