Within the framework of relativistic quantum field theory, a novel method is established which allows for distinguishing non-equilibrium states admitting locally a thermodynamic interpretation. The basic idea is to compare these states with global equilibrium states (KMS states) by means of local th
Local properties of equilibrium states and the particle spectrum in quantum field theory
β Scribed by D. Buchholz; P. Junglas
- Publisher
- Springer
- Year
- 1986
- Tongue
- English
- Weight
- 372 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0377-9017
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β¦ Synopsis
It is shown that in a quantum field theory describing free, scalar particles with masses m,, i ~ ~q there exist locally normal equilibrium states with finite energy density for all temperatures fl > 0 if and only if Z ~ 1 e-~' < o0. This result lends support to the conjecture that the nuclearity criterion proposed by Buchholz and Wichmann is sensitive to the thermodynamical properties of field-theoretic models.
π SIMILAR VOLUMES
The optimized expansion for the effective action in quantum field theory is discussed to second order. As an example we use the scalar quantum field theory with \(\lambda \phi^{4}\) interaction in one-dimensional space-time, which is equivalent to quantum mechanics of the anharmonic ascillator. The