Cosmological and Black Hole Spacetimes in Twisted Noncommutative Gravity
arXiv:0906.2730 · doi:10.1088/1126-6708/2009/10/052
Abstract
We derive noncommutative Einstein equations for abelian twists and their solutions in consistently symmetry reduced sectors, corresponding to twisted FRW cosmology and Schwarzschild black holes. While some of these solutions must be rejected as models for physical spacetimes because they contradict observations, we find also solutions that can be made compatible with low energy phenomenology, while exhibiting strong noncommutativity at very short distances and early times.
LaTeX 12 pages, JHEP.sty
References in corpus (7)
- A Gravity Theory on Noncommutative Spaces
- Twisting all the way: from Classical Mechanics to Quantum Fields
- Noncommutative D=4 gravity coupled to fermions
- Constraints from CMB on Spacetime Noncommutativity and Causality Violation
- Noncommutative supergravity in D=3 and D=4
- Exact Black Hole Solutions in Noncommutative Gravity
- Symmetry Reduction in Twisted Noncommutative Gravity with Applications to Cosmology and Black Holes