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Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.084019
Abstract: In this paper we present an iterative method to generate an infinite class of new nonlocal field theories whose propagators are ghost-free. We first examine the scalar field case and show that the pole structure…
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Keywords:
field theories;
field;
free propagators;
generalized ghost ... See more keywords