Fingerprints of the quantum space-time in time-dependent quantum
mechanics: An emergent geometric phase
- URL: http://arxiv.org/abs/2110.04730v3
- Date: Mon, 21 Feb 2022 14:16:49 GMT
- Title: Fingerprints of the quantum space-time in time-dependent quantum
mechanics: An emergent geometric phase
- Authors: Anwesha Chakraborty, Partha Nandi, Biswajit Chakraborty
- Abstract summary: We show the emergence of Berry phase in a forced harmonic oscillator system placed in the quantum space-time of Moyal type.
Adiabatic evolution over time-period $mathcalT$ is studied in Heisenberg picture to compute the expression of geometric phase-shift.
- Score: 0.9176056742068814
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We show the emergence of Berry phase in a forced harmonic oscillator system
placed in the quantum space-time of Moyal type, where the time 't' is also an
operator. An effective commutative description of the system gives a time
dependent generalised harmonic oscillator system with perturbation linear in
position and momentum. The system is then diagonalised to get a generalised
harmonic oscillator and then its adiabatic evolution over time-period
$\mathcal{T}$ is studied in Heisenberg picture to compute the expression of
geometric phase-shift.
Related papers
- Out-Of-Time-Ordered-Correlators for the Pure Inverted Quartic Oscillator: Classical Chaos meets Quantum Stability [0.0]
Out-of-time-ordered-correlators (OTOCs) have been suggested as a means to diagnose chaotic behavior in quantum mechanical systems.
I study OTOCs for the inverted anharmonic (pure quartic) oscillator in quantum mechanics.
For higher temperature, OTOCs seem to exhibit saturation consistent with a value of $-2 langle x2 rangle_T langle p2 rangle_T$ at late times.
arXiv Detail & Related papers (2024-08-22T18:00:00Z) - A magnetic clock for a harmonic oscillator [89.99666725996975]
We study how the quantum dynamics transforms into a classical-like behaviour when conditions related with macroscopicity are met by the clock alone.
In the description of this emerging behaviour finds its place the classical notion of time, as well as that of phase-space and trajectories on it.
arXiv Detail & Related papers (2023-10-20T09:55:51Z) - Geometric phases along quantum trajectories [58.720142291102135]
We study the distribution function of geometric phases in monitored quantum systems.
For the single trajectory exhibiting no quantum jumps, a topological transition in the phase acquired after a cycle.
For the same parameters, the density matrix does not show any interference.
arXiv Detail & Related papers (2023-01-10T22:05:18Z) - Schwinger-Keldysh path integral formalism for a Quenched Quantum Inverted Oscillator [0.0]
We study the time-dependent behaviour of quantum correlations of a system governed by out-of-equilibrium dynamics.
Next, we study a specific case, where the system exhibits chaotic behaviour by computing the quantum Lyapunov from the time-dependent behaviour of OTOC.
arXiv Detail & Related papers (2022-10-03T18:00:02Z) - Dynamical scaling symmetry and asymptotic quantum correlations for
time-dependent scalar fields [0.0]
In time-independent quantum systems, entanglement entropy possesses an inherent scaling symmetry that the energy of the system does not have.
We show that such systems have dynamical scaling symmetry that leaves the evolution of various measures of quantum correlations invariant.
arXiv Detail & Related papers (2022-05-26T13:20:46Z) - Out-of-time-order correlator in the quantum Rabi model [62.997667081978825]
We show that out-of-time-order correlator derived from the Loschmidt echo signal quickly saturates in the normal phase.
We show that the effective time-averaged dimension of the quantum Rabi system can be large compared to the spin system size.
arXiv Detail & Related papers (2022-01-17T10:56:57Z) - Harmonic oscillator kicked by spin measurements: a Floquet-like system
without classical analogous [62.997667081978825]
The impulsive driving is provided by stroboscopic measurements on an ancillary degree of freedom.
The dynamics of this system is determined in closed analytical form.
We observe regimes with crystalline and quasicrystalline structures in phase space, resonances, and evidences of chaotic behavior.
arXiv Detail & Related papers (2021-11-23T20:25:57Z) - Time periodicity from randomness in quantum systems [0.0]
Many complex systems can spontaneously oscillate under non-periodic forcing.
We show that this behavior can emerge within the repeated-interaction description of open quantum systems.
Specifically, we consider a many-body quantum system that undergoes dissipation due to sequential coupling with auxiliary systems at random times.
arXiv Detail & Related papers (2021-04-27T18:02:31Z) - Sensing quantum chaos through the non-unitary geometric phase [62.997667081978825]
We propose a decoherent mechanism for sensing quantum chaos.
The chaotic nature of a many-body quantum system is sensed by studying the implications that the system produces in the long-time dynamics of a probe coupled to it.
arXiv Detail & Related papers (2021-04-13T17:24:08Z) - Unraveling the topology of dissipative quantum systems [58.720142291102135]
We discuss topology in dissipative quantum systems from the perspective of quantum trajectories.
We show for a broad family of translation-invariant collapse models that the set of dark state-inducing Hamiltonians imposes a nontrivial topological structure on the space of Hamiltonians.
arXiv Detail & Related papers (2020-07-12T11:26:02Z) - Many-Body Dephasing in a Trapped-Ion Quantum Simulator [0.0]
How a closed interacting quantum many-body system relaxes and dephases as a function of time is a fundamental question in thermodynamic and statistical physics.
We analyse and observe the persistent temporal fluctuations after a quantum quench of a tunable long-range interacting transverse-field Ising Hamiltonian realized with a trapped-ion quantum simulator.
arXiv Detail & Related papers (2020-01-08T12:33:28Z)
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.