Abstract:
The strong analogy between states defined in the context of quantum field theory in curved space-time (QFT-CST) and the ones defined in the thermo field dynamics (TFD) of Takahashi and Umezawa [1] is shown. This analogy is useful in order to introduce the entropy operator in CST in the same way as in TFD. When the extremum condition in the thermodynamical potential is imposed, a family of Bogoliubov transformations that give us a planckian spectrum is found, even in "pathological" cases such as the minimally coupled scalar field. © 1994 Plenum Publishing Corporation.
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Citas:
---------- APA ----------
(1994)
. Quantum field theory in curved space-time as thermo field dynamics. General Relativity and Gravitation, 26(4), 363-378.
http://dx.doi.org/10.1007/BF02105227---------- CHICAGO ----------
Laciana, C.E.
"Quantum field theory in curved space-time as thermo field dynamics"
. General Relativity and Gravitation 26, no. 4
(1994) : 363-378.
http://dx.doi.org/10.1007/BF02105227---------- MLA ----------
Laciana, C.E.
"Quantum field theory in curved space-time as thermo field dynamics"
. General Relativity and Gravitation, vol. 26, no. 4, 1994, pp. 363-378.
http://dx.doi.org/10.1007/BF02105227---------- VANCOUVER ----------
Laciana, C.E. Quantum field theory in curved space-time as thermo field dynamics. Gen Relat Gravit. 1994;26(4):363-378.
http://dx.doi.org/10.1007/BF02105227
