Viscous Spacetime Fluid and Higher Curvature Gravity
| dc.creator | Tiwari, S. C. | |
| dc.date | 2007-05-26 | |
| dc.date.accessioned | 2026-07-07T08:03:18Z | |
| dc.date.available | 2026-07-07T08:03:18Z | |
| dc.description | The Einstein field equation as an equation of state of a thermodynamical system of spacetime is reconsidered in the present Letter. We argue that a consistent interpretation leads us to identify scalar curvature and cosmological constant terms representing the bulk viscosity of the spacetime fluid. Since Einstein equation itself corresponds to a near-equilibrium state in this interpretation invoking $f(R)$ gravity for nonequilibrium thermodynamics is not required. A logically consistent generalization to include the effect of so called 'tidal forces' due to the Riemann curvature is presented. A new equation of state for higher curvature gravity is derived and its physical interpretation is discussed. | |
| dc.description | 4 pages, no figures, submitted for publication | |
| dc.identifier | https://arxiv.org/abs/0705.3882 | |
| dc.identifier | http://arxiv.org/abs/0705.3882 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/129533 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Viscous Spacetime Fluid and Higher Curvature Gravity | |
| dc.type | text |