The Hawking-Page crossover in noncommutative anti-deSitter space

作者：Nicolini Piero; Torrieri Giorgio

来源：The Journal of High Energy Physics, 2011, 2011(8): 097.

DOI：10.1007/JHEP08(2011)097

• Black Holes
• Models of Quantum Gravity
• Holography and quark-gluon plasmas
• Gauge-gravity correspondence

We study the problem of a Schwarzschild-anti-deSitter black hole in a noncommutative geometry framework, thought to be an effective description of quantum-gravitational spacetime. As a first step we derive the noncommutative geometry inspired Schwarzschikl-anti-deSitter solution. After studying the horizon structure, we find that the curvature singularity is smeared out by the noncommutative fluctuations. On the thermodynamics side, we show that the black hole temperature, instead of a divergent behavior at small scales, admits a maximum value. This fact implies an extension of the Hawking-Page transition into a van der Waals-like phase diagram, with a critical point at a critical cosmological constant size in Plank units and a smooth crossover thereafter. We speculate that, in the gauge-string dictionary, this corresponds to the confinement "critical point" in number of colors at finite number of flavors, a highly non-trivial parameter that can be determined through lattice simulations.

• 出版日期2011-8