Lorentz invariance vs. temperature in QFT

@article{Ojima1986LorentzIV,
  title={Lorentz invariance vs. temperature in QFT},
  author={Izumi Ojima},
  journal={Letters in Mathematical Physics},
  year={1986},
  volume={11},
  pages={73-80}
}
  • I. Ojima
  • Published 1986
  • Physics
  • Letters in Mathematical Physics
The Lorentz invariance of a relativistic QFT is shown to be broken spontaneously at finite temperature with a zero-energy Goldstone spectrum which does not necessarily carry a one-particle structure. The Lorentz behaviour of the temperature is determined and the relation between Gibbs states in different Lorentz frames is clarified. 
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