A note on black hole entropy in loop quantum gravity

作者：Carlip S^*

来源：Classical and Quantum Gravity, 2015, 32(15): 155009.

DOI：10.1088/0264-9381/32/15/155009

• loop quantum gravity
• black hole thermodynamics
• black hole entropy
• Bekenstein-Hawking entropy

Several recent results have hinted that black hole thermodynamics in loop quantum gravity simplifies if one chooses an imaginary Barbero-Immirzi parameter gamma = i. This suggests a connection with SL(2, C ) or SL(2, R) conformal field theories at the 'boundaries' formed by spin network edges intersecting the horizon. I present a bit of background regarding the relevant conformal field theories, along with some speculations about how they might be used to count black hole states. I show, in particular, that a set of unproven but plausible assumptions can lead to a boundary conformal field theory whose density of states matches the Bekenstein-Hawking entropy.

• 出版日期2015-8-6