UV completion on the worldline
| Autor: | Nicola Andrea Dondi, Steven Abel |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
High Energy Physics - Theory Nuclear and High Energy Physics 010308 nuclear & particles physics Computation Modular invariance Effective Field Theories String field theory 01 natural sciences General Relativity and Quantum Cosmology Weighting Scattering amplitude Theoretical physics High Energy Physics - Phenomenology UV completion 0103 physical sciences lcsh:QC770-798 lcsh:Nuclear and particle physics. Atomic energy. Radioactivity String Field Theory Special case 010306 general physics Scattering Amplitudes Saddle |
| Zdroj: | Journal of High Energy Physics Abel, S & Dondi, N A 2019, ' UV completion on the worldline ', Journal of High Energy Physics, vol. 2019, no. 7, 90 . https://doi.org/10.1007/JHEP07(2019)090 Journal of high energy physics, 2019, Vol.2019(7), pp.090 [Peer Reviewed Journal] Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-21 (2019) |
| DOI: | 10.1007/JHEP07(2019)090 |
| Popis: | 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 proper-time dependent measure that has a smallest proper-time. We deduce a criterion to avoid ghosts, and find that the ghost-free theories have the (string-theory inspired) infinite-derivative model of Siegel as a special case, but represent a significant generalisation. Generically, the UV of such theories is dominated by a saddle-point in the proper-time, leading to simplification 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". Comment: 20 pages, uses tikzfeynman. Comment and references added |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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