Thermodynamic Properties of the Piecewise Uniform String

Details Thermodynamic Properties of the Piecewise Uniform String Thermodynamic Properties of the Piecewise Uniform String

1997-03-12

arxiv.org/abs/hep-th/9703089v2

Class.Quant.Grav.15:3383-3395,1998

Physics

High Energy Physics

High Energy Physics - Theory

32 pages, latex, no figures

Scientific paper

10.1088/0264-9381/15/11/006

The thermodynamic free energy F is calculated for a gas whose particles are the quantum excitations of a piecewise uniform bosonic string. The string consists of two parts of length L_I and L_II, endowed with different tensions and mass densities, adjusted in such a way that the velocity of sound always equals the velocity of light. The explicit calculation is done under the restrictive condition that the tension ratio x = T_I/T_II approaches zero. Also, the length ratio s = L_II/L_I is assumed to be an integer. The expression for F is given on an integral form, in which s is present as a parameter. For large values of s, the Hagedorn temperature becomes proportional to the square root of s.

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