New results for Heisenberg dynamics for non self-adjoint Hamiltonians
- URL: http://arxiv.org/abs/2603.06419v1
- Date: Fri, 06 Mar 2026 15:56:03 GMT
- Title: New results for Heisenberg dynamics for non self-adjoint Hamiltonians
- Abstract summary: We focus on the role of non-self-adjoint Hamiltonians in connection with the Heisenberg dynamics for quantum systems.<n>Our main interest is on conserved quantities, and on conditions which guarantee that some observables of the system, or their mean values, do not evolve in time.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In a previous paper we began our analysis on the role of non self-adjoint Hamiltonians in connection with the Heisenberg dynamics for quantum systems. Here, motivated by the growing interest on this topic and on some recent results on dynamical systems, we continue this analysis focusing on what we believe is an unexplored (or, at least, not so explored! aspect of Heisenberg dynamics, related to the need for using vectors which are {\em brute-force normalized}. Our main interest is on conserved quantities, and on conditions which guarantee that some observables of the system, or their mean values, do not evolve in time.
Related papers
- A physicist-friendly primer on the Hamiltonian for quantum sensing in proteins: analytical expressions and insights for a toy model of the radical-pair mechanism [39.146761527401424]
We present a physicist-friendly primer on the simplest radical-pair Hamiltonian.<n>We show that the dynamics admit a bright-dark decomposition.<n>We import methods developed in the context of technological quantum sensing to obtain further insight into the model.
arXiv Detail & Related papers (2026-04-13T01:56:44Z) - Digitized Counterdiabatic Quantum Feature Extraction [35.670314643295036]
We introduce a Hamiltonian-based quantum feature extraction method that generates complex features via the dynamics of $k$-local many-body spins Hamiltonians.<n>We assess the approach on high-dimensional, real-world datasets, including molecular toxicity classification and image recognition.<n>The results suggest that combining quantum and classical feature extraction can provide consistent improvements across diverse machine learning tasks.
arXiv Detail & Related papers (2025-10-15T17:59:35Z) - Quantum Simulation of Nonlinear Dynamical Systems Using Repeated Measurement [42.896772730859645]
We present a quantum algorithm based on repeated measurement to solve initial-value problems for nonlinear ordinary differential equations.
We apply this approach to the classic logistic and Lorenz systems in both integrable and chaotic regimes.
arXiv Detail & Related papers (2024-10-04T18:06:12Z) - Transport and integrability-breaking in non-Hermitian many-body quantum
systems [0.0]
We study the impact of non-unitary dynamics on the emergent hydrodynamics in quantum systems with a global conservation law.
We show how linear-response correlation functions can be generalized and interpreted in the case of non-Hermitian systems.
arXiv Detail & Related papers (2024-03-04T02:26:30Z) - Dynamics-based quantumness certification of continuous variables using
time-independent Hamiltonians with one degree of freedom [0.0]
We discuss dynamics-based certification for one degree of freedom evolving under a generic time-independent Hamiltonian.
Several examples are explicitly studied, some that are approximately harmonic in the limits of low energy.
arXiv Detail & Related papers (2022-12-12T16:31:25Z) - Observation of magnon bound states in the long-range, anisotropic Heisenberg model [0.0]
Floquet engineering is a versatile tool for realizing novel Hamiltonians.
We experimentally realize a long-ranged, anisotropic Heisenberg model with tunable interactions in a trapped ion quantum simulator.
arXiv Detail & Related papers (2022-12-07T19:00:22Z) - Heisenberg dynamics for non self-adjoint Hamiltonians: symmetries and
derivations [0.0]
We focus on the Heisenberg-like picture of quantum mechanics.
In particular, the role of the symmetries, *-derivations and integrals of motion is discussed.
arXiv Detail & Related papers (2022-12-03T18:56:02Z) - Dynamics of mixed quantum-classical spin systems [0.0]
Mixed quantum-classical spin systems have been proposed in spin chain theory, organic chemistry, and, more recently, spintronics.
Here, we present a fully Hamiltonian theory of quantum-classical spin dynamics that appears to be the first to ensure an entire series of consistency properties.
arXiv Detail & Related papers (2022-10-03T14:53:46Z) - Observation of anisotropy-independent magnetization dynamics in spatially disordered Heisenberg spin systems [0.0]
We experimentally observe robust features in the magnetization relaxation dynamics of disordered Heisenberg XX-, XXZ- and Ising Hamiltonians.
In numerical simulations of small systems, we show that these pairs of spins constitute approximate local integrals of motion.
arXiv Detail & Related papers (2022-09-16T17:44:49Z) - Dynamics with autoregressive neural quantum states: application to
critical quench dynamics [41.94295877935867]
We present an alternative general scheme that enables one to capture long-time dynamics of quantum systems in a stable fashion.
We apply the scheme to time-dependent quench dynamics by investigating the Kibble-Zurek mechanism in the two-dimensional quantum Ising model.
arXiv Detail & Related papers (2022-09-07T15:50:00Z) - Semiclassical simulations predict glassy dynamics for disordered
Heisenberg models [0.0]
We numerically study out-of-equilibrium dynamics in a family of Heisenberg models with $1/r6$ power-law interactions and positional disorder.
We find that both quantities display robust glassy behavior for almost any value of the anisotropy parameter of the Heisenberg Hamiltonian.
arXiv Detail & Related papers (2021-07-28T12:26:57Z) - Non-equilibrium stationary states of quantum non-Hermitian lattice
models [68.8204255655161]
We show how generic non-Hermitian tight-binding lattice models can be realized in an unconditional, quantum-mechanically consistent manner.
We focus on the quantum steady states of such models for both fermionic and bosonic systems.
arXiv Detail & Related papers (2021-03-02T18:56:44Z) - Quantum Non-equilibrium Many-Body Spin-Photon Systems [91.3755431537592]
dissertation concerns the quantum dynamics of strongly-correlated quantum systems in out-of-equilibrium states.
Our main results can be summarized in three parts: Signature of Critical Dynamics, Driven Dicke Model as a Test-bed of Ultra-Strong Coupling, and Beyond the Kibble-Zurek Mechanism.
arXiv Detail & Related papers (2020-07-23T19:05:56Z)
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.