期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
卷 12, 期 4, 页码 677-687出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S021827180300313X
关键词
gravity theory; topological solution; conical singularity
Topological solutions in the (2 + 1)-dimensional Einstein theory of gravity are studied within the ADM canonical formalism. It is found that a conical singularity appears in the closed expanding de Sitter universe solution as a topological defect in the case of the Einstein theory with a cosmological constant. Quantum effects on the conical singularity axe studied using the de Broglie-Bohm interpretation. Finite quantum tunneling effects are obtained for the closed de Sitter universe, while no quantum effects are obtained for an open universe.
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