UV completion on the worldline

Abel, Steven; Dondi, Nicola Andrea

Abstract

A framework for UV completing particle theories is proposed, based on the worldline formalism, which is equivalent to weighting all sums over histories with a propertime dependent measure that has a smallest proper-time. We deduce a criterion to avoid ghosts, and nd that the ghost-free theories have the (string-theory inspired) innitederivative model of Siegel as a special case, but represent a signicant generalisation. Generically, the UV of such theories is dominated by a saddle-point in the proper-time, leading to simplication in the computation of amplitudes. We focus on a particularly attractive option which is to mimic the regulating properties of modular invariance with a worldline \inversion symmetry".

Citation

Abel, S., & Dondi, N. A. (2019). UV completion on the worldline. Journal of High Energy Physics, 2019(7), Article 90. https://doi.org/10.1007/jhep07%282019%29090

• Journal Article Type: Article
• Acceptance Date: Jul 4, 2019
• Online Publication Date: Jul 17, 2019
• Publication Date: Jul 17, 2019
• Deposit Date: Aug 1, 2019
• Publicly Available Date: Aug 1, 2019
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2019
• Issue: 7
• Article Number: 90
• DOI: https://doi.org/10.1007/jhep07%282019%29090
• Public URL: https://durham-repository.worktribe.com/output/1291388