SciPost Submission Page
Cosmological Infrared Subtractions & Infrared-Safe Computables
by Paolo Benincasa, Francisco Vazão
Submission summary
| Authors (as registered SciPost users): | Francisco Vazao |
| Submission information | |
|---|---|
| Preprint Link: | https://arxiv.org/abs/2405.19979v2 (pdf) |
| Date submitted: | 2024-09-04 13:56 |
| Submitted by: | Vazao, Francisco |
| Submitted to: | SciPost Physics |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
Abstract
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.
Author indications on fulfilling journal expectations
- Provide a novel and synergetic link between different research areas.
- Open a new pathway in an existing or a new research direction, with clear potential for multi-pronged follow-up work
- Detail a groundbreaking theoretical/experimental/computational discovery
- Present a breakthrough on a previously-identified and long-standing research stumbling block
Current status:
In refereeing