Global monopoles as indirect evidence for torsion constraint by cobe data

Details Global monopoles as indirect evidence for torsion constraint by cobe data Global monopoles as indirect evidence for torsion constraint by cobe data

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26at...20..681g&link_type=abstract

Astronomical and Astrophysical Transactions, vol. 20, Issue 4, pp.681-684

Astronomy and Astrophysics

Astronomy

Global Monopoles, Torsion

Scientific paper

An approximate solution of Einstein-Cartan field equation describing a topological global monopole is presented. The gravitational field of the torsionic monopole is shown to be attractive. The deficit angle is shown to receive a contribution of torsion which is well within experimental limits in agreement with COBE data. This provides a mechanism for an indirect evidence for Cartan torsion. The presence of torsion may also lead to a stable configuration of the global monopole after inflation as happens in Brans-Dicke gravity.

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