It was shown that the particle distribution detected by a uniformly accelerated observer in the inertial vacuum (Unruh effect) deviates from the pure Planckian spectrum when considering the superposition of fields with different masses. Here, we elaborate on the statistical origin of this phenomenon. In a suitable regime, we provide an effective description of the emergent distribution in terms of the nonextensive q-generalized statistics based on Tsallis entropy. This picture allows us to establish a nontrivial relation between the q-entropic index and the characteristic mixing parameters sinθ and Δm. In particular, we infer that q<1, indicating the superadditive feature of Tsallis entropy in this framework. We discuss our result in connection with the entangled condensate structure acquired by the quantum vacuum for mixed fields.
|Titolo:||Q -generalized Tsallis thermostatistics in Unruh effect for mixed fields|
LUCIANO, GIUSEPPE GAETANO [Membro del Collaboration Group] (Corresponding)
BLASONE, Massimo [Membro del Collaboration Group]
|Data di pubblicazione:||2021|
|Appare nelle tipologie:||1.1.1 Articolo su rivista con DOI|