1999/09/09 by Jeeva S. Anandan, Anandan, Jeeva S.
Physics and Astronomy · #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #gr-qc
paper · pdf · doi:10.48550/arxiv.gr-qc/9909031
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)
arxiv created 1999/09/09 · arxiv updated 2009/11/30
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.