A1 Journal article (refereed)
Unitarity of Minkowski nonlocal theories made explicit (2021)


Koshelev, A. S., & Tokareva, A. (2021). Unitarity of Minkowski nonlocal theories made explicit. Physical Review D, 104(2), Article 025016. https://doi.org/10.1103/physrevd.104.025016


JYU authors or editors


Publication details

All authors or editorsKoshelev, Alexey S.; Tokareva, Anna

Journal or seriesPhysical Review D

ISSN2470-0010

eISSN2470-0029

Publication year2021

Publication date23/07/2021

Volume104

Issue number2

Article number025016

PublisherAmerican Physical Society (APS)

Publication countryUnited States

Publication languageEnglish

DOIhttps://doi.org/10.1103/physrevd.104.025016

Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/77204

Web address of parallel published publication (pre-print)https://arxiv.org/abs/2103.01945


Abstract

In this work we explicitly show that the perturbative unitarity of analytic infinite derivative scalar field theories can be achieved using a modified prescription for computing scattering amplitudes. The crux of the new prescription is the analytic continuation of a result obtained in the Euclidean signature to the Minkowski external momenta. We intensively elaborate an example of a nonlocal ϕ4 model for various infinite derivative operators. General UV properties of amplitudes in nonlocal theories are discussed.



Contributing organizations


Related projects

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Ministry reportingYes

Reporting Year2021

JUFO rating2


Last updated on 2024-26-03 at 09:20