RT info:eu-repo/semantics/article
T1 Thermal Casimir effect with general boundary conditions
A1 Muñoz Castañeda, José María
A1 Santamaría Sanz, Lucía
A1 Donaire, Manuel
A1 Tello Fraile, Marcos
K1 Física
K1 Physics
K1 Matemáticas
K1 Mathematics
AB In this paper we study the system of a scalar quantum field confined between two plane, isotropic, and homogeneous parallel plates at thermal equilibrium. We represent the plates by the most general lossless and frequency-independent boundary conditions that satisfy the conditions of isotropy and homogeneity and are compatible with the unitarity of the quantum field theory. Under these conditions we compute the thermal correction to the quantum vacuum energy as a function of the temperature and the parameters encoding the boundary condition. The latter enables us to obtain similar results for the pressure between plates and the quantum thermal correction to the entropy. We find out that our system is thermodynamically stable for any boundary conditions, and we identify a critical temperature below which certain boundary conditions yield attractive, repulsive, and null Casimir forces.
PB Springer
SN 1434-6044
YR 2020
FD 2020-08
LK http://hdl.handle.net/10259/10322
UL http://hdl.handle.net/10259/10322
LA eng
NO The authors are grateful to the Spanish Government-MINECO (MTM2014- 57129-C2-1-P) and the Junta de Castilla y León (BU229P18, VA137G18 and VA057U16) for the financial support received. LSS is grateful to the Spanish Government-MINECO for the FPU-fellowships programme (FPU18/00957). MTF acknowledges financial support from the European Social Fund, the Operational Programme of Junta de Castilla y León and the regional Ministry of Education.
DS Repositorio Institucional de la Universidad de Burgos
RD 10-may-2025