Casimir Energy of a Dilute Dielectric Ball at Zero and Finite Temperature
نویسندگان
چکیده
The basic results in calculations of the thermodynamic functions of electromagnetic field in the background of a dilute dielectric ball at zero and finite temperature are presented. Summation over the angular momentum values is accomplished in a closed form by making use of the addition theorem for the relevant Bessel functions. The behavior of the thermodynamic characteristics in the low and high temperature limits is investigated. The T -term in the low temperature expansion of the free energy is recovered (this term has been lost in our previous calculations). PACS numbers: 12.20.Ds, 03.70.+k, 78.60.Mq
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