Space-time foliation in quantum gravity /
In this thesis, the author considers quantum gravity to investigate the mysterious origin of our universe and its mechanisms. He and his collaborators have greatly improved the analyticity of two models: causal dynamical triangulations (CDT) and n-DBI gravity, with the space-time foliation which is...
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| Format: | eBook |
| Language: | English |
| Published: |
Tokyo
Springer Japan
2014.
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| Series: | Springer Theses, Recognizing Outstanding Ph.D. Research
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| Subjects: | |
| Online Access: | Click here to view the full text content |
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| Summary: | In this thesis, the author considers quantum gravity to investigate the mysterious origin of our universe and its mechanisms. He and his collaborators have greatly improved the analyticity of two models: causal dynamical triangulations (CDT) and n-DBI gravity, with the space-time foliation which is one common factor shared by these two separate models. In the first part, the analytic method of coupling matters to CDT in 2-dimensional toy models is proposed to uncover the underlying mechanisms of the universe and to remove ambiguities remaining in CDT. As a result, the wave function of the 2-dimensional universe where matters are coupled is derived. The behavior of the wave function reveals that the Hausdorff dimension can be changed when the matter is non-unitary. In the second part, the n-DBI gravity model is considered. The author mainly investigates two effects driven by the space-time foliation: the appearance of a new conserved charge in black holes and an extra scalar mode of the graviton. The former implies a breakdown of the black-hole uniqueness theorem while the latter does not show any pathological behavior. |
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| Physical Description: | 1 online resource (XIII, 100 pages) 16 illustration, 12 illustration in colour. |
| ISBN: | 9784431549475 |
| ISSN: | 2190-5053 |