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$O(N)$ model in Euclidean de Sitter space: beyond the leading infrared approximation
We consider an $O(N)$ scalar field model with quartic interaction in $d$-dimensional Euclidean de Sitter space. In order to avoid the problems of the standard perturbative calculations for light and massless fields, we generalize to the $O(N)$ theory a systematic method introduced previously for a s...
| Autores principales: | , , |
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| Lenguaje: | eng |
| Publicado: |
2016
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1007/JHEP09(2016)117 http://cds.cern.ch/record/2160524 |