Zobrazeno 1 - 10
of 180
pro vyhledávání: '"Dong-Han Yeom"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-26 (2024)
Abstract In this article, we explicitly construct the coordinates associated with the Penrose diagram in spacetimes connected via a spacelike thin shell in the following two examples: the generalized black-to-white hole bounce with mass difference an
Externí odkaz:
https://doaj.org/article/f63b8760143f4e598b30ca718313e9a5
Publikováno v:
Symmetry, Vol 16, Iss 4, p 444 (2024)
We find a novel phenomenon in the solution to the Wheeler–DeWitt equation by solving numerically the equation assuming O(4)-symmetry and imposing the Hartle–Hawking wave function as a boundary condition. In the slow-roll limit, as expected, the n
Externí odkaz:
https://doaj.org/article/dc800da026714175a9fd5489cbc98b49
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 9, Pp 1-14 (2022)
Abstract In canonical quantum gravity, the wave function for a hypersurface inside a Schwarzschild black hole can be obtained by solving the Wheeler–DeWitt equation. What is of prime importance is the behavior of the wave function for the future bo
Externí odkaz:
https://doaj.org/article/d0c576385ee840f7adc60c0ae4e95c2e
Publikováno v:
Entropy, Vol 25, Iss 12, p 1663 (2023)
The information loss paradox associated with black hole Hawking evaporation is an unresolved problem in modern theoretical physics. In a recent brief essay, we revisited the evolution of the black hole entanglement entropy via the Euclidean path inte
Externí odkaz:
https://doaj.org/article/9a6703ac442e49e6b3b4c2c0e656e6ca
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 9, Pp 1-11 (2021)
Abstract We construct traversable wormholes with anti-de Sitter asymptotics supported by a phantom field. These wormholes are massless and symmetric with respect to reflection of the radial coordinate $$\eta \rightarrow - \eta $$ η → - η . Their
Externí odkaz:
https://doaj.org/article/780a82f7b7e8415cb49e0077b9d46b4f
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 4, Pp 1-11 (2021)
Abstract In this paper, we show that a minimally coupled 3-form endowed with a proper potential can support a regular black hole interior. By choosing an appropriate form for the metric function representing the radius of the 2-sphere, we solve for t
Externí odkaz:
https://doaj.org/article/214d6f40b9da49db9077ba6541c26c59
Autor:
Suddhasattwa Brahma, Dong-han Yeom
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 8, Pp 1-9 (2020)
Abstract We investigate a regular black hole model with a de Sitter-like core at its center. This type of a black hole model with a false vacuum core was introduced with the hope of singularity-resolution and is a common feature shared by many regula
Externí odkaz:
https://doaj.org/article/d63f9dcd003443bf96165fd40e7dc3e8
Autor:
Subeom Kang, Dong-han Yeom
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 11, Pp 1-11 (2019)
Abstract We investigate spherically symmetric solutions in string theory. Such solutions depend on three parameters, one of which corresponds to the asymptotic mass while the other two are the dilaton and two-form field amplitudes, respectively. If t
Externí odkaz:
https://doaj.org/article/bacfb89e769a41fe8a7a04d79ad79f31
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 7, Pp 1-11 (2019)
Abstract There have been various interpretations of Hawking radiation proposed based on the perturbative approach, and all have confirmed Hawking’s original finding. One major conceptual challenge of Hawking evaporation is the associated black hole
Externí odkaz:
https://doaj.org/article/c97519a8803340559e8fd5ef2c9e852f
Autor:
Gansukh Tumurtushaa, Dong-han Yeom
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 6, Pp 1-9 (2019)
Abstract We investigate a nucleation of a Euclidean wormhole and its analytic continuation to Lorentzian signatures in Gauss–Bonnet-dilaton gravity, where this model can be embedded by the type-II superstring theory. We show that there exists a Euc
Externí odkaz:
https://doaj.org/article/16a172b0994447458f039709a63be10c