A correspondence between the free and interacting field

Abstract We discover a correspondence between the free field and the interacting states. This correspondence is firstly given from the fact that the free propagator can be converted into a tower of propagators for massive states, when expanded with the Hermite function basis. The equivalence of prop...

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Bibliographic Details
Main Authors: Fei Gao, Minghui Ding, Yu-xin Liu, Sebastian M. Schmidt
Format: Article
Language:English
Published: SpringerOpen 2023-02-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-023-11278-4