Thermodynamics of relativistic quantum fields confined in cavities

Funding

We thank the late Jacob Bekenstein, Tsvi Piran, Jandu Dradouma, Gabriel Landi and Luis Cortés Barbado for useful comments and suggestions. We are greatly indebted to Marcus Huber for his help with the thermodynamics aspects of this work. D.E.B. was initially supported by the I-CORE Program of the Planning and Budgeting Committee and the Israel Science Foundation (grant No. 1937/12 ), as well as by the Israel Science Foundation personal grant No. 24/12 . D.E.B. was also supported by John Templeton Foundation grant no. 58745 and the COST Actions MP1209 and MP1304 . D.E.B. acknowledges support from the LIQUID collaboration, in which context part of this work was done. D.E.B. also acknowledges later hospitality from the Hebrew University of Jerusalem and the University of Vienna, where part of this work was done. B.M. acknowledges the financial support of the EPSRC (Grant No. EP/N50970X/1 ). I.F. would like to acknowledge that this project was made possible through the support of the Penrose Institute, the grant “Quantum Observers in a Relativistic World” from FQXi's Physics of the Observer program, and the grant “Leaps in cosmology: gravitational wave detection with quantum systems' ” (No. 58745 ) from the John Templeton Foundation .