Vacuum fluctuations of a massless spin-1/2 field around multiple cosmic strings

ALIEV A., HORTACSU M., Ozdemir N.

CLASSICAL AND QUANTUM GRAVITY, vol.14, no.12, pp.3215-3224, 1997 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 14 Issue: 12
  • Publication Date: 1997
  • Doi Number: 10.1088/0264-9381/14/12/008
  • Journal Name: CLASSICAL AND QUANTUM GRAVITY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3215-3224
  • Istanbul Technical University Affiliated: Yes

Abstract

We study the interaction of a massless quantized spinor field with the gravitational field of N parallel static cosmic strings by using a perturbative approach. We show that the presence of more than one cosmic string gives rise to an additional contribution to the energy density of vacuum fluctuations, thereby leading to a vacuum force of attraction between two parallel cosmic strings.