Riemannian approach and cosmological singularity
We study the definition of the Feynman propagator for a free conformally coupled scalar field on a Robertson-Walker background, as the continuation to physical space of the single propagator of a Riemannian manifold. If the space-time has a cosmological singularity, a boundary condition is proposed...
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| Formato: | JOUR |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_05562821_v29_n8_p1609_Calzetta |
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todo:paper_05562821_v29_n8_p1609_Calzetta2023-10-03T15:35:13Z Riemannian approach and cosmological singularity Calzetta, E. Castagnino, M. We study the definition of the Feynman propagator for a free conformally coupled scalar field on a Robertson-Walker background, as the continuation to physical space of the single propagator of a Riemannian manifold. If the space-time has a cosmological singularity, a boundary condition is proposed that leads to the definition of particle modes at the singularity. © 1984 The American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05562821_v29_n8_p1609_Calzetta |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
We study the definition of the Feynman propagator for a free conformally coupled scalar field on a Robertson-Walker background, as the continuation to physical space of the single propagator of a Riemannian manifold. If the space-time has a cosmological singularity, a boundary condition is proposed that leads to the definition of particle modes at the singularity. © 1984 The American Physical Society. |
| format |
JOUR |
| author |
Calzetta, E. Castagnino, M. |
| spellingShingle |
Calzetta, E. Castagnino, M. Riemannian approach and cosmological singularity |
| author_facet |
Calzetta, E. Castagnino, M. |
| author_sort |
Calzetta, E. |
| title |
Riemannian approach and cosmological singularity |
| title_short |
Riemannian approach and cosmological singularity |
| title_full |
Riemannian approach and cosmological singularity |
| title_fullStr |
Riemannian approach and cosmological singularity |
| title_full_unstemmed |
Riemannian approach and cosmological singularity |
| title_sort |
riemannian approach and cosmological singularity |
| url |
http://hdl.handle.net/20.500.12110/paper_05562821_v29_n8_p1609_Calzetta |
| work_keys_str_mv |
AT calzettae riemannianapproachandcosmologicalsingularity AT castagninom riemannianapproachandcosmologicalsingularity |
| _version_ |
1807324303847325696 |