The Early Universe as an Open Quantum System: Complexity and Decoherence
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866929353177169920 |
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| author | Bhattacharyya, Arpan Brahma, Suddhasattwa Haque, S. Shajidul Lund, Jacob S. Paul, Arpon |
| author_facet | Bhattacharyya, Arpan Brahma, Suddhasattwa Haque, S. Shajidul Lund, Jacob S. Paul, Arpon |
| contents | In this work, we extend previous results, demonstrating how complexity in an open quantum system can identify decoherence between two fields, even in the presence of an accelerating background. Using the curved-space Caldeira-Leggett two-field model in de Sitter as our toy model, we discover a distinctive feature in the growth of complexity of purification, providing an alternative diagnostic for studying decoherence when the adiabatic perturbation is coupled to a heavy field. This paper initiates a new pathway to explore the features of quantum complexity in an accelerating background, thereby expanding our understanding of the evolution of primordial cosmological perturbations in the early universe. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_12134 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The Early Universe as an Open Quantum System: Complexity and Decoherence Bhattacharyya, Arpan Brahma, Suddhasattwa Haque, S. Shajidul Lund, Jacob S. Paul, Arpon High Energy Physics - Theory General Relativity and Quantum Cosmology Quantum Physics In this work, we extend previous results, demonstrating how complexity in an open quantum system can identify decoherence between two fields, even in the presence of an accelerating background. Using the curved-space Caldeira-Leggett two-field model in de Sitter as our toy model, we discover a distinctive feature in the growth of complexity of purification, providing an alternative diagnostic for studying decoherence when the adiabatic perturbation is coupled to a heavy field. This paper initiates a new pathway to explore the features of quantum complexity in an accelerating background, thereby expanding our understanding of the evolution of primordial cosmological perturbations in the early universe. |
| title | The Early Universe as an Open Quantum System: Complexity and Decoherence |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology Quantum Physics |
| url | https://arxiv.org/abs/2401.12134 |