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Thermal ensemble of string gas in a magnetic field

J. G. Russo
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Abstract

We study the thermal ensemble of a gas of free strings in presence of a magnetic field. We find that the thermodynamical partition function diverges when the magnetic field exceeds some critical value $B_{\rm cr}$, which depends on the temperature. We argue that there is a first-order phase transition with a large latent heat. At the critical value an infinite number of states -all states in a Regge trajectory- seem to become massless, which may be an indication of recuperation of spontaneously broken symmetries.

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J. G. Russo. 2004-11-29. Thermal ensemble of string gas in a magnetic field. https://doi.org/10.1016/0370-2693(94)91408-7

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