Static Isolated Horizons: SU(2) Invariant Phase Space, Quantization, and Black Hole Entropy
We study the classical field theoretical formulation of static generic isolated horizons in a manifestly SU(2) invariant formulation. We show that the usual classical description requires revision in the non-static case due to the breaking of diffeomorphism invariance at the horizon leading to the n...
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| Format: | Article |
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MDPI AG
2011-03-01
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| Series: | Entropy |
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| Online Access: | http://www.mdpi.com/1099-4300/13/4/744/ |
| _version_ | 1811184761799966720 |
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| author | Alejandro Perez Daniele Pranzetti |
| author_facet | Alejandro Perez Daniele Pranzetti |
| author_sort | Alejandro Perez |
| collection | DOAJ |
| description | We study the classical field theoretical formulation of static generic isolated horizons in a manifestly SU(2) invariant formulation. We show that the usual classical description requires revision in the non-static case due to the breaking of diffeomorphism invariance at the horizon leading to the non-conservation of the usual pre-symplectic structure. We argue how this difficulty could be avoided by a simple enlargement of the field content at the horizon that restores diffeomorphism invariance. Restricting our attention to static isolated horizons we study the effective theories describing the boundary degrees of freedom. A quantization of the horizon degrees of freedom is proposed. By defining a statistical mechanical ensemble where only the area aH of the horizon is fixed macroscopically—states with fluctuations away from spherical symmetry are allowed—we show that it is possible to obtain agreement with the Hawkings area law (S = aH /(4l 2p)) without fixing the Immirzi parameter to any particular value: consistency with the area law only imposes a relationship between the Immirzi parameter and the level of the Chern-Simons theory involved in the effective description of the horizon degrees of freedom. |
| first_indexed | 2024-04-11T13:17:56Z |
| format | Article |
| id | doaj.art-40ecbe2c1b2844498a9c44a0216f35e2 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-04-11T13:17:56Z |
| publishDate | 2011-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-40ecbe2c1b2844498a9c44a0216f35e22022-12-22T04:22:19ZengMDPI AGEntropy1099-43002011-03-0113474477710.3390/e13040744Static Isolated Horizons: SU(2) Invariant Phase Space, Quantization, and Black Hole EntropyAlejandro PerezDaniele PranzettiWe study the classical field theoretical formulation of static generic isolated horizons in a manifestly SU(2) invariant formulation. We show that the usual classical description requires revision in the non-static case due to the breaking of diffeomorphism invariance at the horizon leading to the non-conservation of the usual pre-symplectic structure. We argue how this difficulty could be avoided by a simple enlargement of the field content at the horizon that restores diffeomorphism invariance. Restricting our attention to static isolated horizons we study the effective theories describing the boundary degrees of freedom. A quantization of the horizon degrees of freedom is proposed. By defining a statistical mechanical ensemble where only the area aH of the horizon is fixed macroscopically—states with fluctuations away from spherical symmetry are allowed—we show that it is possible to obtain agreement with the Hawkings area law (S = aH /(4l 2p)) without fixing the Immirzi parameter to any particular value: consistency with the area law only imposes a relationship between the Immirzi parameter and the level of the Chern-Simons theory involved in the effective description of the horizon degrees of freedom.http://www.mdpi.com/1099-4300/13/4/744/quantum gravityblack hole entropyisolated horizon |
| spellingShingle | Alejandro Perez Daniele Pranzetti Static Isolated Horizons: SU(2) Invariant Phase Space, Quantization, and Black Hole Entropy Entropy quantum gravity black hole entropy isolated horizon |
| title | Static Isolated Horizons: SU(2) Invariant Phase Space, Quantization, and Black Hole Entropy |
| title_full | Static Isolated Horizons: SU(2) Invariant Phase Space, Quantization, and Black Hole Entropy |
| title_fullStr | Static Isolated Horizons: SU(2) Invariant Phase Space, Quantization, and Black Hole Entropy |
| title_full_unstemmed | Static Isolated Horizons: SU(2) Invariant Phase Space, Quantization, and Black Hole Entropy |
| title_short | Static Isolated Horizons: SU(2) Invariant Phase Space, Quantization, and Black Hole Entropy |
| title_sort | static isolated horizons su 2 invariant phase space quantization and black hole entropy |
| topic | quantum gravity black hole entropy isolated horizon |
| url | http://www.mdpi.com/1099-4300/13/4/744/ |
| work_keys_str_mv | AT alejandroperez staticisolatedhorizonssu2invariantphasespacequantizationandblackholeentropy AT danielepranzetti staticisolatedhorizonssu2invariantphasespacequantizationandblackholeentropy |