Vacuum stress around a topological defect

Abstract

We show that a dispiration (a disclination plus a screw dislocation) polarizes the vacuum of a scalar field giving rise to an energy momentum tensor which, as seen from a local inertial frame, presents non vanishing off-diagonal components. The results may have applications in cosmology (chiral cosmic strings) and condensed matter physics (materials with linear defects).

2 pages. Talk given at the Meeting on Renormalization Group and Anomalies in Gravity and Cosmology, Ouro Preto, Brazil, 17-23 March 2003. To appear in the Proceedings

References in corpus (1)

• Volterra Distortions, Spinning Strings, and Cosmic Defects

Cited by in corpus (2)

• Deformations of the spin currents by topological screw dislocation and cosmic dispiration
• Scalar Casimir effect in a high-dimensional cosmic dispiration spacetime