Enhanced Asymptotic Symmetry Algebra of 2+1 Dimensional Flat Space
Dec 1, 201613 pages
Published in:
- Phys.Rev.D 95 (2017) 4, 046008
- Published: Feb 21, 2017
e-Print:
- 1612.00278 [hep-th]
View in:
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Abstract: (APS)
In this paper we present a new set of asymptotic boundary conditions for Einstein gravity in (2+1)-dimensions with a vanishing cosmological constant that are a generalization of the Barnich-Compère boundary conditions [G. Barnich and G. Compere, Classical Quantum Gravity 24, F15 (2007)CQGRDG0264-938110.1088/0264-9381/24/5/F01]. These new boundary conditions lead to an asymptotic symmetry algebra that is generated by a bms3 algebra and two affine u^(1) current algebras. We then apply these boundary conditions to topologically massive gravity (TMG) and determine how the presence of the gravitational Chern-Simons term affects the central extensions of the asymptotic symmetry algebra. We furthermore determine the thermal entropy of solutions obeying our new boundary conditions for both Einstein gravity and TMG.Note:
- 10 pages; v2: minor typos corrected & added references
- symmetry: algebra
- dimension: 3
- cosmological constant: 0
- mass: topological
- boundary condition
- gravitation
- Einstein
- Chern-Simons term
- current algebra
- thermal
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- [11]
- [12]
- [13]
- [14]
- [15]
- [16]
- [17]
- [18]
- [19]
- [20]
- [21]
- [22]
- [23]
- [24]
- [25]