Dynamical String Fluids in General Relativity
Abstract
The general, energy-momentum tensor for a dynamical spinning fluid in general relativity is presented using the Ray-Hilbert variational principle. The calculations are given for both the standard and the extended thermodynamic versions in which the latter includes both the spin and string as thermodynamic variables. Examples of solutions to the field equations are given for the extensions of static black holes for non spining string fluid to stationary slowly rotating black holes for spinning string fluids. These solutions are then compared with solutions obtained from the postulated energy-momentum tensor of Letelier. The general feature of these solutions for positive energy density is that the spin causes the even horizon for the stationary black hole to contract whether or not the spin is considered a thermodynamic variable.
- Publication:
-
APS Southeastern Section Meeting Abstracts
- Pub Date:
- November 1997
- Bibcode:
- 1997APS..SES..EC06S