Cosmological Infrared Subtractions & Infrared-Safe Computables
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , |
|---|---|
| Format: | Preprint |
| Publié: |
2024
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866911023581102080 |
|---|---|
| author | Benincasa, Paolo Vazão, Francisco |
| author_facet | Benincasa, Paolo Vazão, Francisco |
| contents | Cosmological observables in perturbation theory turn out to be plagued with infrared divergences, which represents both a conceptual and computational challenge. In this paper we present a proof of concept for a systematic procedure to remove these divergences in a large class of scalar cosmological integrals and consistently define an infrared safe computable in perturbation theory. We provide diagrammatic rules which are based on the nestohedra underlying the asymptotic structure of such integrals. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_19979 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Cosmological Infrared Subtractions & Infrared-Safe Computables Benincasa, Paolo Vazão, Francisco High Energy Physics - Theory General Relativity and Quantum Cosmology Combinatorics Cosmological observables in perturbation theory turn out to be plagued with infrared divergences, which represents both a conceptual and computational challenge. In this paper we present a proof of concept for a systematic procedure to remove these divergences in a large class of scalar cosmological integrals and consistently define an infrared safe computable in perturbation theory. We provide diagrammatic rules which are based on the nestohedra underlying the asymptotic structure of such integrals. |
| title | Cosmological Infrared Subtractions & Infrared-Safe Computables |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology Combinatorics |
| url | https://arxiv.org/abs/2405.19979 |