Deformations of Quantum Field Theories and Quantum Gravity in Finite Spacetimes
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| Pubblicato in: | ProQuest Dissertations and Theses (2025) |
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ProQuest Dissertations & Theses
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| 100 | 1 | |a Yang, Sungyeon | |
| 245 | 1 | |a Deformations of Quantum Field Theories and Quantum Gravity in Finite Spacetimes | |
| 260 | |b ProQuest Dissertations & Theses |c 2025 | ||
| 513 | |a Dissertation/Thesis | ||
| 520 | 3 | |a Holography has been one of the most promising approaches to study quantum gravity and led to numerous important discoveries that revolutionized our understanding of quantum gravity, Yet, it is still a major challenge to extend the holographic princi-ple beyond Anti-de Sitter space. Building a model of holography for de Sitter space can be a crucial step towards a theory of quantum gravity consistent with the ob-served accelerated expansion of the universe. In this thesis, we explore a proposal for holographic construction of three-dimensional de Sitter space, which uses the ir-relevant TT deformation and its generalizations TT, A2 and OO. We will first go through a trajectory of the solvable TT + A2 deformation and define a boundary dual that captures universal aspects of the duality. Then, we explain an algorithm to properly incorporate the OO operator into the trajectory of deformations and il-lustrate a detailed trajectory that builds a boundary dual that can capture further model-dependent details of the duality. In the last chapter, we study how entan-glement spreads in finite-cutoff three-dimensional spacetimes with positive, negative and zero cosmological constants and describe the spread of entanglement with the entanglement tsunami interpretation. | |
| 653 | |a Spacetime | ||
| 653 | |a Quantum field theory | ||
| 653 | |a Energy | ||
| 653 | |a Gravity | ||
| 653 | |a Boundary conditions | ||
| 653 | |a Black holes | ||
| 653 | |a Geometry | ||
| 653 | |a Entropy | ||
| 653 | |a Astronomy | ||
| 653 | |a Astrophysics | ||
| 653 | |a Mathematics | ||
| 653 | |a Theoretical physics | ||
| 773 | 0 | |t ProQuest Dissertations and Theses |g (2025) | |
| 786 | 0 | |d ProQuest |t ProQuest Dissertations & Theses Global | |
| 856 | 4 | 1 | |3 Citation/Abstract |u https://www.proquest.com/docview/3275491735/abstract/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text - PDF |u https://www.proquest.com/docview/3275491735/fulltextPDF/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |