Koopman-von Neumann Field Theory
- URL: http://arxiv.org/abs/2507.11541v1
- Date: Tue, 15 Jul 2025 17:59:59 GMT
- Title: Koopman-von Neumann Field Theory
- Authors: James Stokes,
- Abstract summary: Quantum field operators evolve unitarily in the Heisenberg picture so that a quantum Vlasov equation is satisfied as an operator identity.<n>The formalism enables the direct transfer of techniques from quantum information and quantum many-body field theory to classical nonequilibrium statistical mechanics.
- Score: 1.1095601668670758
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The classical many-body problem is reformulated as a bosonic quantum field theory. Quantum field operators evolve unitarily in the Heisenberg picture so that a quantum Vlasov equation is satisfied as an operator identity. The formalism enables the direct transfer of techniques from quantum information and quantum many-body field theory to classical nonequilibrium statistical mechanics. Implications for quantum algorithms are discussed.
Related papers
- Operationally classical simulation of quantum states [41.94295877935867]
A classical state-preparation device cannot generate superpositions and hence its emitted states must commute.<n>We show that no such simulation exists, thereby certifying quantum coherence.<n>Our approach is a possible avenue to understand how and to what extent quantum states defy generic models based on classical devices.
arXiv Detail & Related papers (2025-02-03T15:25:03Z) - A Theory of Quantum Jumps [44.99833362998488]
We study fluorescence and the phenomenon of quantum jumps'' in idealized models of atoms coupled to the quantized electromagnetic field.
Our results amount to a derivation of the fundamental randomness in the quantum-mechanical description of microscopic systems.
arXiv Detail & Related papers (2024-04-16T11:00:46Z) - Quantum data learning for quantum simulations in high-energy physics [55.41644538483948]
We explore the applicability of quantum-data learning to practical problems in high-energy physics.
We make use of ansatz based on quantum convolutional neural networks and numerically show that it is capable of recognizing quantum phases of ground states.
The observation of non-trivial learning properties demonstrated in these benchmarks will motivate further exploration of the quantum-data learning architecture in high-energy physics.
arXiv Detail & Related papers (2023-06-29T18:00:01Z) - Quantum Relativity [0.0]
A new quantum postulate is suggested to restore classical locality and causality to quantum physics.
This postulate supports the EPR view that quantum mechanics is incomplete, while also staying compatible to the Bohr view that nothing exists beyond the quantum.
arXiv Detail & Related papers (2023-02-04T02:05:25Z) - Quantum Scars in Quantum Field Theory [0.30458514384586405]
We develop the theory of quantum scars for quantum fields.
We find that an unstable variant of Q-balls, called Q-clouds, induce quantum scars.
Some technical contributions of our work include methods for characterizing moduli spaces of periodic orbits in field theories.
arXiv Detail & Related papers (2022-12-03T15:43:36Z) - Quantum tomography explains quantum mechanics [0.0]
A suggestive notion for what constitutes a quantum detector leads to a logically impeccable definition of measurement.
The various forms of quantum tomography for quantum states, quantum detectors, quantum processes, and quantum instruments are discussed.
The new approach is closer to actual practice than the traditional foundations.
arXiv Detail & Related papers (2021-10-11T14:09:30Z) - Information Scrambling in Computationally Complex Quantum Circuits [56.22772134614514]
We experimentally investigate the dynamics of quantum scrambling on a 53-qubit quantum processor.
We show that while operator spreading is captured by an efficient classical model, operator entanglement requires exponentially scaled computational resources to simulate.
arXiv Detail & Related papers (2021-01-21T22:18:49Z) - Classical limit of quantum mechanics for damped driven oscillatory
systems: Quantum-classical correspondence [0.0]
We develop a quantum formalism on the basis of a linear-invariant theorem.
We illustrate the correspondence of the quantum energy with the classical one in detail.
arXiv Detail & Related papers (2020-10-18T12:12:01Z) - Lagrangian description of Heisenberg and Landau-von Neumann equations of
motion [55.41644538483948]
An explicit Lagrangian description is given for the Heisenberg equation on the algebra of operators of a quantum system, and for the Landau-von Neumann equation on the manifold of quantum states which are isospectral with respect to a fixed reference quantum state.
arXiv Detail & Related papers (2020-05-04T22:46:37Z) - Quantum simulation of quantum field theories as quantum chemistry [9.208624182273288]
Conformal truncation is a powerful numerical method for solving generic strongly-coupled quantum field theories.
We show that quantum computation could not only help us understand fundamental physics in the lattice approximation, but also simulate quantum field theory methods directly.
arXiv Detail & Related papers (2020-04-28T01:20:04Z) - From a quantum theory to a classical one [117.44028458220427]
We present and discuss a formal approach for describing the quantum to classical crossover.
The method was originally introduced by L. Yaffe in 1982 for tackling large-$N$ quantum field theories.
arXiv Detail & Related papers (2020-04-01T09:16:38Z)
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.