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[en] The one-loop contribution to the self-energy of a massless scalar particle with a lambdaphi4 self-interaction is investigated in non-minkowskian spacetimes. It is found that the particle may acquire a mass in order lambda in perturbation theory. (Auth.)
Journal
Physics Letters. A; ISSN 0375-9601; 
; v. 70(2); p. 89-91
; v. 70(2); p. 89-91