Corgini, M.; Sankovich, D. P. Two-sided estimates for the internal energy of thermal photons. (English) Zbl 1178.82046 Theor. Math. Phys. 136, No. 1, 1031-1036 (2003); translation from Teor. Mat. Fiz. 136, No. 1, 158-163 (2003). Summary: The upper- and lower-bound estimates for the thermodynamic averages of the occupation number operators are obtained for the case of a nonlinear photon system in thermal equilibrium with the thermostat. Two-sided inequalities for the internal energy of such a system are constructed from the obtained estimates. MSC: 82C10 Quantum dynamics and nonequilibrium statistical mechanics (general) Keywords:photon; Gibbs state; inner product; occupation numbers; Fock representation PDF BibTeX XML Cite \textit{M. Corgini} and \textit{D. P. Sankovich}, Theor. Math. Phys. 136, No. 1, 1031--1036 (2003; Zbl 1178.82046); translation from Teor. Mat. Fiz. 136, No. 1, 158--163 (2003) Full Text: DOI OpenURL