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math-ph2019★ 8 cited
Free energy and entropy for finite temperature quantum field theory under the influence of periodic backgrounds
M. Bordag, J. M. Muñoz-Castañeda, L. Santamaría-Sanz
The basic thermodynamic quantities for a non-interacting scalar field in a periodic potential composed of either a one-dimensional chain of Dirac - functions or a spec…
math-ph2019★ 3 cited
Revisiting the Casimir Energy with General Boundary Conditions, and applications in 1D Crystals
J. M. Muñoz-Castañeda, M. Bordag, L. Santamaría-Sanz
We obtain new expressions for the Casimir energy between plates that are mimicked by the most general possible boundary conditions allowed by the principles of quantum field theory…