Unruh effect and information flow

Abstract

We study memory effects as information backflow for an accelerating two-level detector weakly interacting with a scalar field in the Minkowski vacuum. This is the framework of the well-known Unruh effect: the detector behaves as if it were in a thermal bath with a temperature proportional to its acceleration. Here we show that if we relax the usual assumption of an eternally uniformly accelerating system, and we instead consider the more realistic case in which a finite-size detector starts accelerating at a certain time, information backflow may appear in the dynamics. Our results demonstrate the existence of a connection between the trajectory of the detector in Minkowski space and the behavior of information flow. This allows us to inspect the Unruh effect under a new light, making use of the latest developments in quantum information theory and open quantum systems.

arXiv comment10 pages, 4 figures

References in corpus (27)

• Measure for the Degree of Non-Markovian Behavior of Quantum Processes in Open Systems
• Non-Markovian dynamics in open quantum systems
• Entanglement and non-Markovianity of quantum evolutions
• Quantum Non-Markovianity: Characterization, Quantification and Detection
• The Unruh effect and its applications
• Concepts of quantum non-Markovianity: a hierarchy
• On measures of non-Markovianity: divisibility vs. backflow of information
• Geometrical characterization of non-Markovianity
• How often does the Unruh-DeWitt detector click? Regularisation by a spatial profile
• Considerations on the Unruh Effect: Causality and Regularization
• Using Berry's phase to detect the Unruh effect at lower accelerations
• Decay of accelerated protons and the existence of the Fulling-Davies-Unruh effect
• Then again, how often does the Unruh-DeWitt detector click if we switch it carefully?
• Signatures of the Unruh effect from electrons accelerated by ultra-strong laser fields
• Backreaction and Unruh effect: New insights from exact solutions of uniformly accelerated detectors
• Detection of acceleration radiation in a Bose-Einstein condensate
• Divisibility and Information Flow Notions of Quantum Markovianity for Noninvertible Dynamical Maps
• Near-Thermal Radiation in Detectors, Mirrors and Black Holes: A Stochastic Approach
• Non-Markovian quantum dynamics: What does it mean?
• Is there Unruh radiation?
• Proposal for observing the Unruh effect with classical electrodynamics
• Non-Markovian time evolution of an accelerated qubit
• Understanding Hawking radiation in the framework of open quantum systems
• Revealing memory effects in phase-covariant quantum master equations
• Complete positivity, finite temperature effects, and additivity of noise for time-local qubit dynamics
• The Fulling-Davies-Unruh Effect is Mandatory: The Proton's Testimony
• On the possibility of measuring the Unruh effect

Cited by in corpus (6)

• Unruh and analogue Unruh temperatures for circular motion in 3+1 and 2+1 dimensions
• Relativistic Quantum Thermodynamics of Moving Systems
• Asymptotic States of Accelerated Qubits with Nonzero Background Temperature
• Entanglement dynamics: Generalized master equation for uniformly accelerated two-level systems
• Memory Effects and Entanglement Dynamics of Finite time Acceleration
• Dynamical Maps for Accelerating Detectors