Perturbative Method for Mutual Information and Thermal Entropy of Scalar Quantum Fields
Fuente:
arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866929674424156160 |
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| author | Bramante, Joseph Buchanan, Andrew |
| author_facet | Bramante, Joseph Buchanan, Andrew |
| contents | A new approach is presented to compute entropy for massless scalar quantum fields. By perturbing a skewed correlation matrix composed of field operator correlation functions, the mutual information is obtained for disjoint spherical regions of size $r$ at separation $R$, including an expansion to all orders in $r/R$. This approach also permits a perturbative expansion for the thermal field entropy difference in the small temperature limit ($T \ll 1/r$). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_06054 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Perturbative Method for Mutual Information and Thermal Entropy of Scalar Quantum Fields Bramante, Joseph Buchanan, Andrew High Energy Physics - Theory General Relativity and Quantum Cosmology High Energy Physics - Lattice High Energy Physics - Phenomenology A new approach is presented to compute entropy for massless scalar quantum fields. By perturbing a skewed correlation matrix composed of field operator correlation functions, the mutual information is obtained for disjoint spherical regions of size $r$ at separation $R$, including an expansion to all orders in $r/R$. This approach also permits a perturbative expansion for the thermal field entropy difference in the small temperature limit ($T \ll 1/r$). |
| title | Perturbative Method for Mutual Information and Thermal Entropy of Scalar Quantum Fields |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology High Energy Physics - Lattice High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2310.06054 |