Black hole universe with rotation = 회전을 포함한 블랙홀 우주

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We have numerically investigated an initial data construction of the black hole universe model which consists of cubic lattice of identical rotating black holes. It is the solution of vacuum Einstein constraint equations. To realize our numerical construction of the model, a cubic domain having periodic boundary conditions on each sides is introduced. Our numerical solutions are two parameter families of solutions characterized by the ADM angular momentum of the black hole and the coordinate size of its cubic domain. Our results show that, as the separation of rotating black holes increases, the relation between the Hubble expansion rate and the mass density of black holes becomes similar to the case of the Einstein de Sitter universe although the rotation slows down their agreement compared to the case of non-rotating black hole universe. The behaviors of scale factors defined in various ways are quite different from those in the non-rotating case, but become indentical as the distance between neighboring black holes becomes large. It is also shown that the presence of rotation makes the geometry nearby cubic surfaces anisotropic with negative curvature. In particular, we point out that the relation between the Hubble expansion rate and the mass density of black holes is well described by that of the Kasner universe when the rotating black holes become close.
Advisors
Stewart, Ewan D.researcher스튜어트researcherKang, Gungwonresearcher강궁원researcher
Description
한국과학기술원 :물리학과,
Publisher
한국과학기술원
Issue Date
2016
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 물리학과, 2016.2 ,[v, 36 p. :]

Keywords

black hole; cosmology; lattice; anisotropy; numerical realtivity; 블랙홀; 우주론; 격자; 비등방성; 수치상대론

URI
http://hdl.handle.net/10203/221123
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=648116&flag=dissertation
Appears in Collection
PH-Theses_Ph.D.(박사논문)
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