Thermality of the Unruh effect with intermediate statistics
- URL: http://arxiv.org/abs/2112.05945v2
- Date: Wed, 16 Mar 2022 08:38:24 GMT
- Title: Thermality of the Unruh effect with intermediate statistics
- Authors: Jun Feng, Jing-Jun Zhang, Yihao Zhou
- Abstract summary: We show that coherence monotone has distinct dynamics under the Unruh decoherence and a thermal bath for a static observer.
In particular, for the conformal background with certain scaling dimension, we demonstrate that at fixed proper time a revival of coherence can occur even for growing Unruh decoherence.
- Score: 1.2816011524471358
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Utilizing quantum coherence monotone, we reexamine the thermal nature of the
Unruh effect of an accelerating detector. We consider an UDW detector coupling
to a n-dimensional conformal field in Minkowski spacetime, whose response
spectrum generally exhibits an intermediate statistics of (1+1) anyon field. We
find that the thermal nature of the Unruh effect guaranteed by KMS condition is
characterized by a vanishing asymptotic quantum coherence. We show that the
time-evolution of coherence monotone can distinguish the different thermalizing
ways of the detector, which depends on the scaling dimension of the conformal
primary field. In particular, for the conformal background with certain scaling
dimension, we demonstrate that at fixed proper time a revival of coherence can
occur even for growing Unruh decoherence. Finally, we show that coherence
monotone has distinct dynamics under the Unruh decoherence and a thermal bath
for a static observer.
Related papers
- Onset of Quantum Thermalization in Jahn-Teller model [0.0]
We investigate the onset of quantum thermalization in a system governed by the Jahn-Teller Hamiltonian.
We show that the expectation value of the spin observable quickly approaches its long-time average value.
arXiv Detail & Related papers (2024-05-09T08:50:17Z) - Using nanokelvin quantum thermometry to detect timelike Unruh effect in
a Bose-Einstein condensate [0.0]
We propose to detect the timelike Unruh effect by using an impurity immersed in a Bose-Einstein condensate (BEC)
Our results demonstrate that the timelike Unruh effect can be probed using a stationary two-level impurity with time-dependent energy gap immersed in a BEC within current technologies.
arXiv Detail & Related papers (2023-08-28T01:25:37Z) - Quantum chaos and thermalization in the two-mode Dicke model [77.34726150561087]
We discuss the onset of quantum chaos and thermalization in the two-mode Dicke model.
The two-mode Dicke model exhibits normal to superradiant quantum phase transition.
We show that the temporal fluctuations of the expectation value of the collective spin observable around its average are small and decrease with the effective system size.
arXiv Detail & Related papers (2022-07-08T11:16:29Z) - Uniformly accelerated Brownian oscillator in (2+1)D:
temperature-dependent dissipation and frequency shift [0.0]
We consider an Unruh-DeWitt detector coupled to a quantum scalar field in the (2+1)-dimensional Minkowski spacetime.
We find that both the accelerated detector's dissipation rate and the shift of its frequency caused by the coupling to the field bath depend on the acceleration temperature.
arXiv Detail & Related papers (2022-01-20T16:45:38Z) - Quantum asymmetry and noisy multi-mode interferometry [55.41644538483948]
Quantum asymmetry is a physical resource which coincides with the amount of coherence between the eigenspaces of a generator.
We show that the asymmetry may emphincrease as a result of a emphdecrease of coherence inside a degenerate subspace.
arXiv Detail & Related papers (2021-07-23T07:30:57Z) - General features of the thermalization of particle detectors and the
Unruh effect [0.0]
We study the thermalization of smeared particle detectors that couple locally to $any$ operator in a quantum field theory in curved spacetimes.
We show that if the field state satisfies the KMS condition with inverse temperature $beta$ with respect to the detector's local notion of time evolution, reasonable assumptions ensure that the probe thermalizes to the temperature $1/beta$ in the limit of long interaction times.
arXiv Detail & Related papers (2021-06-28T18:00:05Z) - Uhlmann Fidelity and Fidelity Susceptibility for Integrable Spin Chains
at Finite Temperature: Exact Results [68.8204255655161]
We show that the proper inclusion of the odd parity subspace leads to the enhancement of maximal fidelity susceptibility in the intermediate range of temperatures.
The correct low-temperature behavior is captured by an approximation involving the two lowest many-body energy eigenstates.
arXiv Detail & Related papers (2021-05-11T14:08:02Z) - Thermalization in Quenched Open Quantum Cosmology [0.0]
We study the quantum field theoretic generalization of the Caldeira-Leggett model in general curved space-time.
The thermalization phenomena is then studied from the obtained de Sitter solution using quantum quench.
arXiv Detail & Related papers (2021-04-21T18:00:03Z) - Analog cosmological reheating in an ultracold Bose gas [58.720142291102135]
We quantum-simulate the reheating-like dynamics of a generic cosmological single-field model in an ultracold Bose gas.
Expanding spacetime as well as the background oscillating inflaton field are mimicked in the non-relativistic limit.
The proposed experiment has the potential of exploring the evolution up to late times even beyond the weak coupling regime.
arXiv Detail & Related papers (2020-08-05T18:00:26Z) - Probing eigenstate thermalization in quantum simulators via
fluctuation-dissipation relations [77.34726150561087]
The eigenstate thermalization hypothesis (ETH) offers a universal mechanism for the approach to equilibrium of closed quantum many-body systems.
Here, we propose a theory-independent route to probe the full ETH in quantum simulators by observing the emergence of fluctuation-dissipation relations.
Our work presents a theory-independent way to characterize thermalization in quantum simulators and paves the way to quantum simulate condensed matter pump-probe experiments.
arXiv Detail & Related papers (2020-07-20T18:00:02Z) - Decoherence as Detector of the Unruh Effect [58.720142291102135]
We propose a new type of the Unruh-DeWitt detector which measures the decoherence of the reduced density matrix of the detector interacting with the massless quantum scalar field.
We find that the decoherence decay rates are different in the inertial and accelerated reference frames.
arXiv Detail & Related papers (2020-03-10T21:45:09Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.