scholarly journals q -generalized Tsallis thermostatistics in Unruh effect for mixed fields

2021 ◽  
Vol 104 (4) ◽  
Author(s):  
Giuseppe Gaetano Luciano ◽  
Massimo Blasone
Keyword(s):  
Unruh Effect ◽  
Mixed Fields

scholarly journals Nonextensive Tsallis statistics in Unruh effect for Dirac neutrinos

2021 ◽  
Vol 81 (11) ◽  
Author(s):  
Giuseppe Gaetano Luciano ◽  
Massimo Blasone
Keyword(s):  
Pauli Exclusion Principle ◽  
Exclusion Principle ◽  
Unruh Effect ◽  
Dirac Fermions ◽  
Tsallis Statistics ◽  
Mixing Parameters ◽  
Flavor Mixing ◽  
Mixed Fields ◽  
Effective Description ◽  
Entropic Index

AbstractFlavor mixing of quantum fields was found to be responsible for the breakdown of the thermality of Unruh effect. Recently, this result was revisited in the context of nonextensive Tsallis thermostatistics, showing that the emergent vacuum condensate can still be featured as a thermal-like bath, provided that the underlying statistics is assumed to obey Tsallis prescription. This was analyzed explicitly for bosons. Here we extend this study to Dirac fermions and in particular to neutrinos. Working in the relativistic approximation, we provide an effective description of the modified Unruh spectrum in terms of the q-generalized Tsallis statistics, the q-entropic index being dependent on the mixing parameters $$\sin \theta $$ sin θ and $$\Delta m$$ Δ m . As opposed to bosons, we find $$q>1$$ q > 1 , which is indicative of the subadditivity regime of Tsallis entropy. An intuitive understanding of this result is discussed in relation to the nontrivial entangled structure exhibited by the quantum vacuum for mixed fields, combined with the Pauli exclusion principle.

scholarly journals Modification to the Hawking temperature of a dynamical black hole by a flow-induced supertranslation

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Hsu-Wen Chiang ◽  
Yu-Hsien Kung ◽  
Pisin Chen
Keyword(s):  
Black Hole ◽  
Coordinate Transformation ◽  
Information Loss ◽  
Hawking Temperature ◽  
Asymptotic Region ◽  
Unruh Effect ◽  
Anisotropic Flow ◽  
Information Loss Paradox ◽  
History Of ◽  
Entire History

Abstract One interesting proposal to solve the black hole information loss paradox without modifying either general relativity or quantum field theory, is the soft hair, a diffeomorphism charge that records the anisotropic radiation in the asymptotic region. This proposal, however, has been challenged, given that away from the source the soft hair behaves as a coordinate transformation that forms an Abelian group, thus unable to store any information. To maintain the spirit of the soft hair but circumvent these obstacles, we consider Hawking radiation as a probe sensitive to the entire history of the black hole evaporation, where the soft hairs on the horizon are induced by the absorption of a null anisotropic flow, generalizing the shock wave considered in [1, 2]. To do so we introduce two different time-dependent extensions of the diffeomorphism associated with the soft hair, where one is the backreaction of the anisotropic null flow, and the other is a coordinate transformation that produces the Unruh effect and a Doppler shift to the Hawking spectrum. Together, they form an exact BMS charge generator on the entire manifold that allows the nonperturbative analysis of the black hole horizon, whose surface gravity, i.e. the Hawking temperature, is found to be modified. The modification depends on an exponential average of the anisotropy of the null flow with a decay rate of 4M, suggesting the emergence of a new 2-D degree of freedom on the horizon, which could be a way out of the information loss paradox.

scholarly journals Unruh effect universality: emergent conical geometry from density operator

2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
Georgy Y. Prokhorov ◽  
Oleg V. Teryaev ◽  
Valentin I. Zakharov
Keyword(s):  
Density Operator ◽  
Unruh Effect

scholarly journals Unruh effect of detectors with quantized center of mass

2021 ◽  
Vol 103 (10) ◽  
Author(s):  
Vivishek Sudhir ◽  
Nadine Stritzelberger ◽  
Achim Kempf
Keyword(s):  
Center Of Mass ◽  
Unruh Effect

scholarly journals Using Berry’s Phase to Detect the Unruh Effect at Lower Accelerations

2011 ◽  
Vol 107 (13) ◽  
Author(s):  
Eduardo Martín-Martínez ◽  
Ivette Fuentes ◽  
Robert B. Mann
Keyword(s):  
Unruh Effect ◽  
Berry's Phase ◽  
Berry’S Phase

Protecting quantum coherence in an open system under non-inertial frames

2017 ◽  
Vol 31 (35) ◽  
pp. 1750336
Author(s):  
Long-Fei Wang ◽  
Ming-Ming Du ◽  
Liu Ye
Keyword(s):  
Open System ◽  
Significant Interaction ◽  
Quantum Coherence ◽  
Weak Measurement ◽  
Entangled State ◽  
Unruh Effect ◽  
Amplitude Damping ◽  
Inertial Frames ◽  
Weak Measurement And Reversal

In this paper, we explore the dynamics and protection of quantum coherence in an open system under non-inertial frames by weak measurement and reversal, and design four strategies to protect the quantum coherence of an initial two-qubit entangled state, when the systems suffer from amplitude damping (AD) channel and one subsystem is under non-inertial frames. In practice, there is no strict inertial frames, decoherence and degradation of the quantum coherence caused by the Unruh effect form acceleration will have a significant interaction, therefore it is important to find some means to protect quantum coherence under non-inertial frames.

scholarly journals Unruh effect without Rindler horizon

2015 ◽  
Vol 32 (4) ◽  
pp. 045013 ◽  
Author(s):  
Nistor Nicolaevici
Keyword(s):  
Unruh Effect

scholarly journals How the Unruh effect affects transition between classical and quantum decoherences

2012 ◽  
Vol 707 (2) ◽  
pp. 264-271 ◽  
Author(s):  
Zehua Tian ◽  
Jiliang Jing
Keyword(s):  
Unruh Effect
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