Quantum Signatures of Cosmic Topology: How Casimir Backreaction Transmits Isotropy Violation
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866911519302746112 |
|---|---|
| author | Negro, Anna Hinterbichler, Kurt Starkman, Glenn D. Akrami, Yashar Anselmi, Stefano Duque, Javier Carrón Barandiaran, Mikel Martin Pereira, Thiago S. Alestas, George Copi, Craig J. Cornet-Gomez, Fernando Lu, Linn Htat Jaffe, Andrew H. Kosowsky, Arthur Mihaylov, Deyan P. Noltmann, Joline Gómez, José Javier Ortega Petretti, Catherine Samandar, Amirhossein Tamosiunas, Andrius |
| author_facet | Negro, Anna Hinterbichler, Kurt Starkman, Glenn D. Akrami, Yashar Anselmi, Stefano Duque, Javier Carrón Barandiaran, Mikel Martin Pereira, Thiago S. Alestas, George Copi, Craig J. Cornet-Gomez, Fernando Lu, Linn Htat Jaffe, Andrew H. Kosowsky, Arthur Mihaylov, Deyan P. Noltmann, Joline Gómez, José Javier Ortega Petretti, Catherine Samandar, Amirhossein Tamosiunas, Andrius |
| contents | A finite, scheme-independent Casimir contribution to the stress-energy tensor arises naturally for quantum fields in universes with non-trivial spatial topology. We compute this Casimir stress-energy tensor contribution for a conformally coupled scalar field and for a minimally coupled scalar field. We show that, for the conformally coupled case, the backreaction of this contribution to the Einstein equations during an expanding de Sitter phase drives anisotropic expansion even when the Universe begins in a locally homogeneous and isotropic state. We conclude that quantum imprints of the underlying non-trivial topology inevitably give rise to local departures from homogeneity and isotropy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_12319 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Quantum Signatures of Cosmic Topology: How Casimir Backreaction Transmits Isotropy Violation Negro, Anna Hinterbichler, Kurt Starkman, Glenn D. Akrami, Yashar Anselmi, Stefano Duque, Javier Carrón Barandiaran, Mikel Martin Pereira, Thiago S. Alestas, George Copi, Craig J. Cornet-Gomez, Fernando Lu, Linn Htat Jaffe, Andrew H. Kosowsky, Arthur Mihaylov, Deyan P. Noltmann, Joline Gómez, José Javier Ortega Petretti, Catherine Samandar, Amirhossein Tamosiunas, Andrius High Energy Physics - Theory Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology A finite, scheme-independent Casimir contribution to the stress-energy tensor arises naturally for quantum fields in universes with non-trivial spatial topology. We compute this Casimir stress-energy tensor contribution for a conformally coupled scalar field and for a minimally coupled scalar field. We show that, for the conformally coupled case, the backreaction of this contribution to the Einstein equations during an expanding de Sitter phase drives anisotropic expansion even when the Universe begins in a locally homogeneous and isotropic state. We conclude that quantum imprints of the underlying non-trivial topology inevitably give rise to local departures from homogeneity and isotropy. |
| title | Quantum Signatures of Cosmic Topology: How Casimir Backreaction Transmits Isotropy Violation |
| topic | High Energy Physics - Theory Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2603.12319 |