403 citations · 3.2k across the 103 of their papers we have counts for
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Quantization of Jackiw-Teitelboim gravity with a massless scalar
Dongsu Bak, Chanju Kim, Sang-Heon Yi
We study canonical quantization of Jackiw-Teibelboim (JT) gravity coupled to a massless scalar field. We provide concrete expressions of matter SL(2,{\,\bf R}) charges and the boun…
Structure of deformations in Jackiw-Teitelboim black holes with matter
Dongsu Bak, Chanju Kim, Sang-Heon Yi
We consider Jackiw-Teitelboim gravity with a massless matter field and turn on bulk excitations leading to a nontrivial vev of the corresponding dual boundary operator. To leading…
Python's Lunches in Jackiw-Teitelboim gravity with matter
Dongsu Bak, Chanju Kim, Sang-Heon Yi +1
We study Python's lunch geometries in the two-dimensional Jackiw-Teitelboim model coupled to a massless scalar field in the semiclassical limit. We show that all extrema including…
Unitarity of Entanglement and Islands in Two-Sided Janus Black Holes
Dongsu Bak, Chanju Kim, Sang-Heon Yi +1
We explore the entanglement evolution of boundary intervals in eternal Janus black holes that can be embedded consistently into string theory in the low-energy limit. By studying t…
Experimental Probes of Traversable Wormholes
Dongsu Bak, Chanju Kim, Sang-Heon Yi
We propose possible probes which could be used to demonstrate experimentally the existence of the bulk and the formation of a traversable wormhole purely in terms of boundary opera…
Nonabelian M5-brane on
Dongsu Bak, Andreas Gustavsson
We compute the conformal anomaly of a nonabelian M5 brane on in the large limit by using the gravity dual of a black hole. We also obtain a general formula fo…
Transparentizing Black Holes to Eternal Traversable Wormholes
Dongsu Bak, Chanju Kim, Sang-Heon Yi
We present the gravity description of evaporating black holes that end up with eternal traversable wormholes where every would-be behind horizon degree is available in asymptotic r…
Bulk View of Teleportation and Traversable Wormholes
Dongsu Bak, Chanju Kim, Sang-Heon Yi
We construct detailed AdS gravity solutions describing the teleportation through a traversable wormhole sending a state from one side of the wormhole to the other. The traversa…
Information and Coarse-Graining in Eternal Black Holes
Dongsu Bak
Recently it was shown in the context of the AdS/CFT correspondence that the classical gravity description inevitably involves coarse-graining of some degrees. In this note we clari…
Five-dimensional fermionic Chern-Simons theory
Dongsu Bak, Andreas Gustavsson
We study 5d fermionic CS theory with a fermionic 2-form gauge potential. This theory can be obtained from 5d MSYM theory by performing the maximal topological twist. We put the the…
Quantum Information Metric on
Dongsu Bak, Andrea Trivella
We present a formula for the information metric on for a scalar primary operator of integral dimension . This formula is c…
Holographic Micro Thermofield Geometries of BTZ Black Holes
Dongsu Bak, Chanju Kim, Kyung Kiu Kim +1
We find general deformations of BTZ spacetime and identify the corresponding thermofield initial states of the dual CFT. We deform the geometry by introducing bulk fields dual to p…
Geometric Monte Carlo and Black Janus Geometries
Dongsu Bak, Chanju Kim, Kyung Kiu Kim +2
We describe an application of the Monte Carlo method to the Janus deformation of the black brane background. We present numerical results for three and five dimensional black Janus…
Witten indices of abelian M5 brane on
Dongsu Bak, Andreas Gustavsson
Witten indices and partition functions are computed for abelian 6d tensor and hypermultiplets on in Lorentzian signature in an R gauge field background which…
Conformal Janus on Euclidean Sphere
Dongsu Bak, Andreas Gustavsson, Soo-Jong Rey
We interpret Janus as an interface in a conformal field theory and study its properties. The Janus is created by an exactly marginal operator and we study its effect on the interfa…
Information metric and Euclidean Janus correspondence
Dongsu Bak
We consider the quantum information metric of a family of CFTs perturbed by an exactly marginal operator, which has the dual description of the Euclidean Janus geometries. We first…
Partially twisted superconformal M5 brane in R-symmetry gauge field backgrounds
Dongsu Bak, Andreas Gustavsson
We obtain the action for a curved superconformal abelian M5 brane with the background R-symmetry gauge field turned on. We then restrict ourselves to superconformal M5 brane on a s…
The geometric Langlands twist in five and six dimensions
Dongsu Bak, Andreas Gustavsson
Abelian 6d (2,0) theory has SO(5) R symmetry. We twist this theory by identifying the R symmetry group with the SO(5) subgroup of the SO(1,5) Lorentz group. This twisted theory can…
Elliptic genera of monopole strings
Dongsu Bak, Andreas Gustavsson
We obtain the elliptic genera of monopole strings in 5d MSYM. We find agreement with corresponding TST-dual dyonic-instanton single particle indices in 1110.2175. We make use of (2…
Multi-faced Black Janus and Entanglement
Dongsu Bak, Hyunsoo Min
To the second order of the deformation parameter, we construct the black brane solutions, which are dual to the multiple interface deformations of conformal field theories. We comp…
One dyonic instanton in 5d maximal SYM theory
Dongsu Bak, Andreas Gustavsson
We study the one-instanton sector of 5d U(N) maximal SYM theory. By using the moduli space approximation we obtain all the 1/4-BPS bound states of one dyonic instanton when a vev i…
M5/D4 brane partition function on a circle bundle
Dongsu Bak, Andreas Gustavsson
We consider Abelian M5 brane on a six-manifold which we take as a circle bundle over a five-manifold . We compute the zero mode part of the M5 brane partition function using Che…
Exact 4-point Scattering Amplitude of the Superconformal Schrodinger Chern-Simons Theory
Sangnam Park, Dongsu Bak
We consider the non-relativistic superconformal U(N) X U(N) Chern-Simons theory with level (k,-k) possessing fourteen supersymmetries. We obtain an exact four-point scattering ampl…
Janus Black Holes
Dongsu Bak, Michael Gutperle, Romuald A. Janik
In this paper Janus black holes in AdS3 are considered. These are static solutions of an Einstein-scalar system with broken translation symmetry along the horizon. These solutions…