Brevik, I.Matsas, G. E A [UNESP]Moreira, E. S. [UNESP]2014-05-272014-05-271998-07-15Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 58, n. 2, p. 275021-275024, 1998.0556-2821http://hdl.handle.net/11449/65476We reexamine the two-point function approaches used to study vacuum fluctuation in wedge-shaped regions and conical backgrounds. The appearance of divergent integrals is discussed and circumvented. The issue is considered in the context of a massless scalar field in cosmic string spacetime.275021-275024engArtigo10.1103/PhysRevD.58.027502WOS:000075180900061Acesso aberto2-s2.0-05423713172-s2.0-0542371317.pdf8525680767393616