Anti-Unruh effect in the thermal background

Yongjie Pan; Baocheng Zhang

doi:10.1103/physrevd.104.125014

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

Journal of High Energy Physics ◽

10.1007/jhep12(2020)089 ◽

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.

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Unruh effect universality: emergent conical geometry from density operator

Journal of High Energy Physics ◽

10.1007/jhep03(2020)137 ◽

2020 ◽

Vol 2020 (3) ◽

Cited By ~ 3

Author(s):

Georgy Y. Prokhorov ◽

Oleg V. Teryaev ◽

Valentin I. Zakharov

Keyword(s):

Density Operator ◽

Unruh Effect

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Unruh effect of detectors with quantized center of mass

Physical Review D ◽

10.1103/physrevd.103.105023 ◽

2021 ◽

Vol 103 (10) ◽

Author(s):

Vivishek Sudhir ◽

Nadine Stritzelberger ◽

Achim Kempf

Keyword(s):

Center Of Mass ◽

Unruh Effect

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

Physical Review Letters ◽

10.1103/physrevlett.107.131301 ◽

2011 ◽

Vol 107 (13) ◽

Cited By ~ 69

Author(s):

Eduardo Martín-Martínez ◽

Ivette Fuentes ◽

Robert B. Mann

Keyword(s):

Unruh Effect ◽

Berry's Phase ◽

Berry’S Phase

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

Modern Physics Letters B ◽

10.1142/s0217984917503365 ◽

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.

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