Remarks on Cosmic Strings and Quantum Gravity
摘要
A quantum equivalence principle is formulated by means of a gravitational phase operator which is an element of the Poincare group. This is applied to the spinning cosmic string which suggests that it may, but not necessarily, contain gravitational torsion. A new exact solution of the Einstein- Cartan-Sciama-Kibble equations for the gravitational field with torsion is obtained everywhere for a cosmic string with uniform energy density, spin density and flux. The quantization condition for fluxoid due to London and DeWitt is generalized to include the spin flux. A novel effect due to the quantized gravitational field of the cosmic string on the wave function of a particle outside the string is used to show that spacetime points are not meaningful in quantum gravity.
引用
@article{arxiv.gr-qc/9909031,
title = {Remarks on Cosmic Strings and Quantum Gravity},
author = {Jeeva S. Anandan},
journal= {arXiv preprint arXiv:gr-qc/9909031},
year = {2007}
}
备注
14 pages, Tex. Submitted in 1994 for publication in the proceedings of the Conference on Bose and 20th Century Physics, Calcutta, Jan. 1994, edited by Partha Ghose (Kluwer)