Spinor Green function in higher-dimensional cosmic string space-time in the presence of magnetic flux
Abstract
In this paper we investigate the vacuum polarization effects associated with quantum fermionic charged fields in a generalized dimensional cosmic string space-times considering the presence of a magnetic flux along the string. In order to develop this analysis we calculate a general expression for the respective Green function, valid for several different values of , which is expressed in terms of a bispinor associated with the square of the Dirac operator. Adopting this result, we explicitly calculate the renormalized vacuum expectation values of the energy-momentum tensors, , associated with massless fields. Moreover, for specific values of the parameters which codify the cosmic string and the fractional part of the ratio of the magnetic flux by the quantum one, we were able to present in closed forms the bispinor and the respective Green function for massive fields.
Keywords
Cite
@article{arxiv.0802.4401,
title = {Spinor Green function in higher-dimensional cosmic string space-time in the presence of magnetic flux},
author = {J. Spinelly and E. R. Bezerra de Mello},
journal= {arXiv preprint arXiv:0802.4401},
year = {2009}
}
Comments
27 pages, 6 figures. This version accepted for publication in JHEP contains a minor modification and two new references