285 citations · 1.7k across the 31 of their papers we have counts for
19 papers · 1 filter
CFT and Lattice Correlators Near an RG Domain Wall between Minimal Models
Cameron V. Cogburn, A. Liam Fitzpatrick, Hao Geng
Conformal interfaces separating two conformal field theories (CFTs) provide maps between different CFTs, and naturally exist in nature as domain walls between different phases. One…
Constraining braneworlds with entanglement entropy
Hao Geng, Andreas Karch, Carlos Perez-Pardavila +4
We propose swampland criteria for braneworlds viewed as effective field theories of defects coupled to semiclassical gravity. We do this by exploiting their holographic interpretat…
Revisiting Recent Progress in the Karch-Randall Braneworld
Hao Geng
Motivated by the study of entanglement island in the Karch-Randall braneworld, it has been conjectured and proven in general that entanglement island is not consistent with long-ra…
BCFT in a Black Hole Background: An Analytical Holographic Model
Hao Geng, Lisa Randall, Erik Swanson
We study the entanglement phase structure of a holographic boundary conformal field theory (BCFT) in a two-dimensional black hole background. The bulk dual is the AdS black str…
Aspects of AdS Quantum Gravity and the Karch-Randall Braneworld
Hao Geng
In this paper, we use the Karch-Randall braneworld to study theories of quantum gravity in two dimensional (nearly) anti-de Sitter space (AdS). We focus on effective gravitatio…
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…
Entanglement Phase Structure of a Holographic BCFT in a Black Hole Background
Hao Geng, Andreas Karch, Carlos Perez-Pardavila +4
We compute holographic entanglement entropy for subregions of a BCFT thermal state living on a nongravitating black hole background. The system we consider is doubly holographic an…
Fractons and exotic symmetries from branes
Hao Geng, Shamit Kachru, Andreas Karch +2
The emerging study of fractons, a new type of quasi-particle with restricted mobility, has motivated the construction of several classes of interesting continuum quantum field theo…
Inconsistency of Islands in Theories with Long-Range Gravity
Hao Geng, Andreas Karch, Carlos Perez-Pardavila +4
In ordinary gravitational theories, any local bulk operator in an entanglement wedge is accompanied by a long-range gravitational dressing that extends to the asymptotic part of th…
Holographic BCFTs and Communicating Black Holes
Hao Geng, Severin Lüst, Rashmish K. Mishra +1
We study the AdS/BCFT duality between two-dimensional conformal field theories with two boundaries and three-dimensional anti-de Sitter space with two Karch-Randall branes. We comp…
An Information Paradox and Its Resolution in de Sitter Holography
Hao Geng, Yasunori Nomura, Hao-Yu Sun
We formulate a version of the information paradox in de Sitter spacetime and show that it is solved by the emergence of entanglement islands in the context of the DS/dS corresponde…
Information Transfer with a Gravitating Bath
Hao Geng, Andreas Karch, Carlos Perez-Pardavila +4
Late-time dominance of entanglement islands plays a critical role in addressing the information paradox for black holes in AdS coupled to an asymptotic non-gravitational bath. A na…
Massive Islands
Hao Geng, Andreas Karch
We comment on the role of the graviton mass in recent calculations of the Page curve using holographic ideas. All reliable calculations of the Page curve in more than 2+1 spacetime…
Non-local Entanglement and Fast Scrambling in De-Sitter Holography
Hao Geng
We study holographic entanglement and information scrambling in de-Sitter (dS) space in the context of the DS/dS correspondence. We find that our previously identified non-local en…
Some Information Theoretic Aspects of De-Sitter Holography
Hao Geng
Built on our observation that entangling surfaces of the boundary field theory are great co-dimension one spheres in the context of DS/dS correspondence, we study some information…
A Potential Mechanism for Inflation from Swampland Conjectures
Hao Geng
Inflation is the currently accepted paradigm for the beginnings of the Universe. To explain the observed almost scale invariant spectrum of density perturbations with only a slight…
Deformation and the Complexity=Volume Conjecture
Hao Geng
Complexity in quantum physics measures how difficult a state can be reached from a reference state and more precisely it is the number of fundamental unitary gates we have to opera…
Distance Conjecture and De-Sitter Quantum Gravity
Hao Geng
Motivated by the early discovery of the gigantic landscape of string theory vacua, in recent years people switched direction to try to find constraints on low energy effective fiel…
Entropy, Entanglement and Swampland Bounds in DS/dS
Hao Geng, Sebastian Grieninger, Andreas Karch
We calculate the entanglement entropy of the de-Sitter (dS) static patch in the context of the DS/dS correspondence. Interestingly, we find that there exists a one parameter family…