Related papers: Spontaneous collapse by entanglement suppression

Spontaneous collapse by entanglement suppression

URL: http://arxiv.org/abs/2303.00697v3
Date: Sat, 15 Jul 2023 07:34:56 GMT
Title: Spontaneous collapse by entanglement suppression
Authors: Eyal Buks
Abstract summary: We study a recently proposed modified Schr"odinger equation having an added nonlinear term. We find that the deterministic time evolution generated by the modified Schr"odinger equation mimics the process of wavefunctionity. In the absence of entanglement, all predictions of standard quantum mechanics are unaffected by the added nonlinear term.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: We study a recently proposed modified Schr\"{o}dinger equation having an added nonlinear term, which gives rise to disentanglement. The process of quantum measurement is explored for the case of a pair of coupled spins. We find that the deterministic time evolution generated by the modified Schr\"{o}dinger equation mimics the process of wavefunction collapse. Added noise gives rise to stochasticity in the measurement process. Conflict with both principles of causality and separability can be avoided by postulating that the nonlinear term is active only during the time when subsystems interact. Moreover, in the absence of entanglement, all predictions of standard quantum mechanics are unaffected by the added nonlinear term.

Related papers

Decoherence without einselection [3.6585412615899324]
We show that einselection is actually artifacts resulting from the non-equilibrium dynamics of the apparatus. We propose a new formalism of operator dressing, which we call the matrix integral (SMI)
arXiv Detail & Related papers (2024-07-06T13:34:03Z)
Measuring the Evolution of Entanglement in Compton Scattering [101.11630543545151]
The behavior of quantum entanglement during scattering is identical to the behavior of initially classically correlated photons up to a constant factor equal to two. Our dedicated experiment with photons confirms these results and explains the "Puzzle of Decoherence" observed recently.
arXiv Detail & Related papers (2024-06-20T14:21:23Z)
Wavefunction collapse driven by non-Hermitian disturbance [0.0]
We model the interaction between a quantum particle and an "apparatus" through a non-Hermitian Hamiltonian term. We analyze how the strength and other parameters of the non-Hermitian perturbation influence the time-to-collapse of the wave function.
arXiv Detail & Related papers (2024-04-25T09:25:17Z)
Spontaneous disentanglement and thermalisation [0.0]
We find that the added nonlinear term enables limit cycle steady states, which are prohibited in standard quantum mechanics. This finding suggests that an experimental observation of such a limit cycle steady state can provide an important evidence supporting the spontaneous disentanglement hypothesis.
arXiv Detail & Related papers (2024-03-20T14:10:24Z)
Quantized Thouless pumps protected by interactions in dimerized Rydberg tweezer arrays [41.94295877935867]
In the noninteracting case, quantized Thouless pumps can only occur when a topological singularity is encircled adiabatically. In the presence of interactions, such topological transport can even persist for exotic paths in which the system gets arbitrarily close to the noninteracting singularity.
arXiv Detail & Related papers (2024-02-14T16:58:21Z)
Partial disentanglement in a multipartite system [0.0]
The extension is based on a modified Schr"odinger equation having an added nonlinear term. It is postulated that disentanglement is active only during the time when particles interact. A butterfly-like effect is found near highly entangled multipartite vector states.
arXiv Detail & Related papers (2023-06-09T12:33:49Z)
Measurement incompatibility is strictly stronger than disturbance [44.99833362998488]
Heisenberg argued that measurements irreversibly alter the state of the system on which they are acting, causing an irreducible disturbance on subsequent measurements. This article shows that measurement incompatibility is indeed a sufficient condition for irreversibility of measurement disturbance. However, we exhibit a toy theory, termed the minimal classical theory (MCT), that is a counterexample for the converse implication.
arXiv Detail & Related papers (2023-05-26T13:47:00Z)
Non-Abelian symmetry can increase entanglement entropy [62.997667081978825]
We quantify the effects of charges' noncommutation on Page curves. We show analytically and numerically that the noncommuting-charge case has more entanglement.
arXiv Detail & Related papers (2022-09-28T18:00:00Z)
Unification of Random Dynamical Decoupling and the Quantum Zeno Effect [68.8204255655161]
We show that the system dynamics under random dynamical decoupling converges to a unitary with a decoupling error that characteristically depends on the convergence speed of the Zeno limit. This reveals a unification of the random dynamical decoupling and the quantum Zeno effect.
arXiv Detail & Related papers (2021-12-08T11:41:38Z)
Designing Kerr Interactions for Quantum Information Processing via Counterrotating Terms of Asymmetric Josephson-Junction Loops [68.8204255655161]
static cavity nonlinearities typically limit the performance of bosonic quantum error-correcting codes. Treating the nonlinearity as a perturbation, we derive effective Hamiltonians using the Schrieffer-Wolff transformation. Results show that a cubic interaction allows to increase the effective rates of both linear and nonlinear operations.
arXiv Detail & Related papers (2021-07-14T15:11:05Z)
Particle mixing and the emergence of classicality: A spontaneous-collapse-model view [0.0]
We show that spontaneous collapse can induce the decay dynamics in both quantum state and master equations. We show that the decay property of a flavor-oscillating system is intimately connected to the time (a)symmetry of the noise field underlying the collapse mechanism.
arXiv Detail & Related papers (2020-08-25T16:07:59Z)

This list is automatically generated from the titles and abstracts of the papers in this site.