403 citations · 3.2k across the 103 of their papers we have counts for
8 papers · 1 filter
Patterns of Gravitational Cooling in Schrodinger Newton System
Dongsu Bak, Seulgi Kim, Hyunsoo Min +1
We study time evolution of Schrodinger-Newton system using the self-consistent Crank-Nicolson method to understand the dynamical characteristics of nonlinear systems. Compactifying…
Entropy of universe as entanglement entropy
Dongsu Bak
We note that the observable part of universe at a certain time t_P is necessarily limited, when there is a beginning of universe. We argue that an appropriate spacetime region asso…
Black Hole Decay and Quantum Instantons
Donsu Bak, Sang Pyo Kim, Sung Ku Kim +2
We study the analytic structure of the S-matrix which is obtained from the reduced Wheeler-DeWitt wave function describing spherically symmetric gravitational collapse of massless…
Gravitational Collapse and Calogero Model
Dongsu Bak, Sang Pyo Kim, Sung Ku Kim +2
We study the analytic structure of the S-matrix which is obtained from the reduced Wheeler-DeWitt wave function describing spherically symmetric gravitational collapse of massless…
Wave Functions for Quantum Black Hole Formation in Scalar Field Collapse
Dongsu Bak, Sang Pyo Kim, Sung Ku Kim +2
We study quantum mechanically the self-similar black hole formation by collapsing scalar field and find the wave functions that give the correct semiclassical limit. In contrast to…
Semiclassical Limit and Time in Quantum Cosmology
Dongsu Bak, Sang Pyo Kim, Sung Ku Kim +2
We propose a method to recover the time variable and the classical evolution of the Universe from the minisuperspace wave function of the Wheeler-DeWitt equation. Defining a Hamilt…
Quantum Creation of Black Hole by Tunneling in Scalar Field Collapse
Dongsu Bak, Sang Pyo kim, Sung Ku Kim +2
Continuously self-similar solution of spherically symmetric gravitational collapse of a scalar field is studied to investigate quantum mechanical black hole formation by tunneling…
Quantum Inflaton Dynamics
Dongsu Bak, Sang Pyo Kim, Sung Ku Kim +2
We show that the quantum dynamics of a real scalar field for a large class of potentials in the symmetric Gaussian state, where the nonperturbative quantum contributions are taken…