Advanced search    

Search: authors:"Bum-Hoon Lee"

7 papers found.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

Matrix models from localization of five-dimensional supersymmetric noncommutative U(1) gauge theory

We study localization of five-dimensional supersymmetric U(1) gauge theory on \( {\mathbb{S}}^3\times {\mathbb{R}}_{\theta}^2 \) where \( {\mathbb{R}}_{\theta}^2 \) is a noncommutative (NC) plane. The theory can be isomorphically mapped to three-dimensional supersymmetric U(N → ∞) gauge theory on \( {\mathbb{S}}^3 \) using the matrix representation on a separable Hilbert space on ...

The upper bound of radiation energy in the Myers-Perry black hole collision

We have investigated the upper bound of the radiation energy in the head-on collision of two Myers-Perry black holes. Initially, the two black holes are far away from each other, and they become one black hole after the collision. We have obtained the upper bound of the radiation energy thermodynamically allowed in the process. The upper bound of the radiation energy is obtained in ...

Properties of holographic mesons on dense medium

leave as future works. Bum-Hoon Lee was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (2014R1A2A1A01002306). Chanyong Park was supported by Basic

Instability of Black Holes with a Gauss–Bonnet Term

We investigate the fragmentation instability of hairy black holes in the theory with a Gauss–Bonnet (GB) term in asymptotically flat spacetime. Our approach is through the non-perturbative fragmentation instability. By this approach, we investigate whether the initial black hole can be broken into two black holes by comparing the entropy of the initial black hole with the sum of ...

Dynamical condensation in a holographic superconductor model with anisotropy

We study dynamical condensation process in a holographic superconductor model with anisotropy. The time-dependent numerical solution is constructed for the Einstein-Maxwell-dilaton theory with complex scalar in asymptotic AdS spacetime. The introduction of dilaton field generates the anisotropy in boundary spatial directions. In analogy of isotropic case, we have two black hole ...

Time evolution of entanglement entropy in quenched holographic superconductors

We investigate the dynamical evolution of entanglement entropy in a holographic superconductor model by quenching the source term of the dual charged scalar operator. By access to the full background geometry, the holographic entanglement entropy is calculated for a strip geometry at the AdS boundary. It is found that the entanglement entropy exhibits a robust non-monotonic ...

Gravitational waves from cosmic bubble collisions

Cosmic bubbles are nucleated through the quantum tunneling process. After nucleation they would expand and undergo collisions with each other. In this paper, we focus in particular on collisions of two equal-sized bubbles and compute gravitational waves emitted from the collisions. First, we study the mechanism of the collisions by means of a real scalar field and its quartic ...