Abstract
In previous chapters we dealt with the variance of the energy, its lower bound being established by quantum mechanical effects. We have shown that in a relativistic view this phenomenon converts into an off-mass-shell effect, and leads to a generalization of the probabilistic view of classical statistical physics to the use of a density operator and its spectral transform, the Wigner function. Yet, the Wigner function is just a particular view of the quantum field theoretical propagator.
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References
C. Tsallis, Introduction to Nonextensive Statistical Mechanics (Springer, Berlin, 2009)
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A. Jakovac, A. Patkos, Resummation and Renormalization in Effective Theories of Particle Physics. Lecture Notes in Physics, vol. 912 (Springer, Berlin, 2016)
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Biró, T.S., Jakovác, A. (2019). Keldysh (Two-Time) Formalism. In: Emergence of Temperature in Examples and Related Nuisances in Field Theory. SpringerBriefs in Physics. Springer, Cham. https://doi.org/10.1007/978-3-030-11689-7_3
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DOI: https://doi.org/10.1007/978-3-030-11689-7_3
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