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Home / Journals / American Journal of Modern Physics / Negative Specific Heat
Negative Specific Heat
Lead Guest Editor:
Snehadri Ota
Solid State Physics, Institute of Physics, Bhubaneswar, Orissa, India
Guest Editors
Nobuyoshi Komatsu
Department of Mechanical Systems Engineering, Kanazawa University
Ishikawa, Japan
Yong-li Ma
State Key Laboratory of Surface Physics and Department of Physics, Fudan University
Shanghai, China
Fang Chen
Kavli Institute for Theoretical Physics (KITP), University of California
Santa Barbara, California, USA
Long Chen
Department of Physics, McGill University
Montreal, Canada
Mohammed Mia
Department of Physics, Columbia University
New York, USA
Olivier Trottier
Department of Physics, McGill University
Montreal, Canada
Solid State Physics, Institute of Physics
Bhubaneswar, Orissa, India
Introduction
The possibility negative specific heat was first suggested in 1968 and subsequently explained by Thirring, Beckenstein and Hawking. The research related to negative specific heat continues till recent time in various topics such as self-gravitating N-body system, thermodynamics of black holes, large-N thermal QCD, Fermionic King model in self gravitating system, finite non-interacting Bose gases and systems with wave-particle interaction. It is also discussed in the context of out-of-equilibrium canonical ensemble. We noticed 'S'-shape in the temperature dependence of energy and resulting negative specific heat in finite isolated system around 2000 in 2D Potts model. Such 'S'-bend was observed in the phase transition region of 2D system consisting of 870 hard-disk particles in 1962. Some of these work are theoretical possibilities and some suggests experimental verification. We have concluded using extremely large Monte Carlo step per spin that such 'S'-shape to be the equilibrium response of a finite isolated system undergoing 1st order transition. We applied it to XY model and Potts model.

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