1997/03/31 by I. Brevik, I Brevik, A. A. Bytsenko +3 · 1 citation
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Quantum Electrodynamics and Casimir Effect #Quantum and Classical Electrodynamics #hep-th
paper · pdf · doi:10.1088/0264-9381/15/11/006
published as Class.Quant.Grav.15:3383-3395,1998 · 32 pages, latex, no figures
arxiv created 1998/04/16 · openalex publication_date 1998/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
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 and , 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 approaches zero. Also, the length ratio is assumed to be an integer. The expression for F is given in 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 .