Publication:
Resummation of QED radiative corrections in a strong constant crossed field

Дата
2020
Авторы
Mironov, A. A.
Meuren, S.
Fedotov, A. M.
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Научные группы
Организационные подразделения
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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Аннотация
By considering radiative corrections of up to 3rd-loop order, Ritus and Narozhny conjectured that the proper expansion parameter for QED in a strong constant crossed field is g = alpha chi(2/3), where the dynamical quantum parameter chi = e root-(Fp)(2)/m(3) combines the particle momentum p with the external field strength tensor F. Here we present and discuss the first nonperturbative result in this context, the resummed bubble-type polarization corrections to the electron self-energy in a constant crossed field. Our analysis confirms the relevance of the scaling parameter g to the enhancement of bubble-type radiative corrections. This parameter actually represents the characteristic value of the ratio of the 1-loop polarization bubble to the photon virtuality. After an all-order resummation we identify and discuss two contributions to the self-energy with different formation regions and asymptotic behavior for g >> 1. Whereas the breakdown of perturbation theory occurs already for g greater than or similar to 1, the leading-order result remains dominant until the asymptotic regime g >> 1 is reached. However, the latter is specific to processes like elastic scattering or photon emission and does not have to remain true for general higher-order QED processes.
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Resummation of QED radiative corrections in a strong constant crossed field / Mironov, AA, Meuren, S, Fedotov, AM // Physical Review D. - 2020. - 102. - № 5. - 10.1103/PhysRevD.102.053005
URI
https://www.doi.org/10.1103/PhysRevD.102.053005
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85092719144&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000568996100002
 https://openrepository.mephi.ru/handle/123456789/22396
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