The EFT bootstrap at finite MPL
A bstract We explore the impact of loop effects on positivity in effective field theories emerging in the infrared from unitary and causal microscopic dynamics. Focusing on massless particles coupled to gravity, we address the treatment of forward-limit divergences from loop discontinuities and establish necessary conditions for maintaining computational control in perturbation theory. While loop effects remain small, ensuring consistency in our approach leads to a significant impact on bounds, even at tree level.
Authors
- Francesco Serra (ORCID: https://orcid.org/0000-0002-7962-3555)
- Giulia Isabella (ORCID: https://orcid.org/0000-0002-7833-9595)
- Sergio Ricossa (ORCID: https://orcid.org/0009-0008-6173-3247)
- Francesco Riva (ORCID: https://orcid.org/0000-0003-1718-9498)
- Carl Beadle (ORCID: https://orcid.org/0009-0004-9176-3827)
- Davide Perrone (ORCID: https://orcid.org/0000-0003-4430-4914)
Institutions
- University of Geneva (CH)
- Johns Hopkins University (US)
- Scuola Normale Superiore (IT)
- University of California, Los Angeles (US)
Publication Details
- Journal
- Journal of High Energy Physics
- Published
- 2025-06-20
- DOI
- https://doi.org/10.1007/jhep06(2025)209
- Citations
- 11
- Primary Topic
- Black Holes and Theoretical Physics
- Type
- article
- Field-Weighted Citation Impact
- 20.57
Funders
- National Science Foundation
- U.S. Department of Energy
- Alfred P. Sloan Foundation
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung