Semiclassical gravitational effects around global monopoles

Details Semiclassical gravitational effects around global monopoles Semiclassical gravitational effects around global monopoles

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990cqgra...7l.235h&link_type=abstract

Classical and Quantum Gravity (ISSN 0264-9381), vol. 7, Nov. 1990, p. L235-L240.

Physics

12

Gravitational Effects, Monopoles, Space-Time Functions, Einstein Equations, Quantum Theory, Stress Analysis, Symmetry

Scientific paper

The vacuum expectation value of the stress-energy tensor of an arbitrary collection of conformal massless free quantum fields (scalar, spinor and vector) in the spacetime of a static, spherically symmetric global monopole is found, up to an undetermined numerical constant. The linearized semiclassical Einstein equations are then solved perturbatively to find the first-order corrections to the exterior metric of such a monopole. The results show that for symmetry breaking scales near the Planck energy, gravitational vacuum polarization effects may significantly alter the value of the monopole core mass; the asymptotic value of the deficit solid angle of the monopole, however, is not changed.

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