6 papers
Resolving Black Hole Singularities in Jackiw-Teitelboim Gravity
Dongsu Bak, Chanju Kim, Sang-Heon Yi
In Jackiw-Teitelboim gravity, the naive Schwarzian quantum mechanics leads to a continuous bulk spectrum, in apparent contradiction with the finite entropy of the black hole, which…
Quantum Inhomogeneous Field Theory: Unruh-Like Effects and Bubble Wall Friction
Jeongwon Ho, O-Kab Kwon, Sang-Heon Yi
In this paper, we study a free scalar field in a specific (1+1)-dimensional curved spacetime. By introducing an algebraic state that is locally Hadamard, we derive the renormalized…
Asymptotic Weyl Symmetry and Its Anomaly in a Curved Spacetime
Jeongwon Ho, O-Kab Kwon, Sang-A Park +1
We explore an unusual symmetry in a field theory on a specific (1+1)-dimensional curved spacetime, which has an interesting interpretation as an approximate asymptotic Weyl symmetr…
Discrete Bulk Spectrum in Jackiw-Teitelboim Theory
Dongsu Bak, Chanju Kim, Sang-Heon Yi
We argue that a discrete bulk spectrum with random statistics appears naturally in the Lorentzian description of Jackiw-Teitelboim (JT) gravity if an extra confining potential is i…
The quasilocal energy and thermodynamic first law in accelerating AdS black holes
Wontae Kim, Mungon Nam, Sang-Heon Yi
We scrutinize the conserved energy of an accelerating AdS black hole by employing the off-shell quasilocal formalism, which amalgamates the ADT formalism with the covariant phase s…
Janus Deformation of de Sitter Space and Transitions in Gravitational Algebras
Dongsu Bak, Chanju Kim, Sang-Heon Yi
We consider a time-dependent deformation of pure de Sitter (dS) space in dS gravity coupled to a massless scalar field. It is the dS counterpart of the AdS Janus…