Integral quantization based on the Heisenberg-Weyl group
- URL: http://arxiv.org/abs/2410.23982v1
- Date: Thu, 31 Oct 2024 14:36:38 GMT
- Title: Integral quantization based on the Heisenberg-Weyl group
- Authors: Aleksandra Pȩdrak, Andrzej Góźdź, Włodzimierz Piechocki, Patryk Mach, Adam Cieślik,
- Abstract summary: We develop a framework of integral quantization applied to the motion of spinless particles in the four-dimensional Minkowski spacetime.
The proposed scheme is based on coherent states generated by the action of the Heisenberg-Weyl group.
A direct application of our model, including a computation of transition amplitudes between states characterized by fixed positions and momenta, is postponed to a forthcoming article.
- Score: 39.58317527488534
- License:
- Abstract: We develop a relativistic framework of integral quantization applied to the motion of spinless particles in the four-dimensional Minkowski spacetime. The proposed scheme is based on coherent states generated by the action of the Heisenberg-Weyl group and has been motivated by the Hamiltonian description of the geodesic motion in General Relativity. We believe that this formulation should also allow for a generalization to the motion of test particles in curved spacetimes. A key element in our construction is the use of suitably defined positive operator-valued measures. We show that this approach can be used to quantize the one-dimensional nonrelativistic harmonic oscillator, recovering the standard Hamiltonian as obtained by the canonical quantization. Our formalism is then applied to the Hamiltonian associated with the motion of a relativistic particle in the Minkowski spacetime. A direct application of our model, including a computation of transition amplitudes between states characterized by fixed positions and momenta, is postponed to a forthcoming article.
Related papers
- Quantum stochastic trajectories for particles and fields based on
positive P-representation [0.0]
We introduce a phase-space description based on the positive P representation for bosonic fields interacting with a system of quantum emitters.
The formalism is applicable to collective light-matter interactions and open quantum systems with decoherence.
A potential future application is the quantum mechanical description of collective spontaneous emission of an incoherently pumped ensemble of atoms.
arXiv Detail & Related papers (2023-06-30T08:38:47Z) - Beyond semiclassical time: dynamics in quantum cosmology [0.0]
We review two approaches to the definition of the Hilbert space and evolution in mechanical theories with local time-reparametrization invariance.
We discuss in which sense both approaches exhibit an inner product that is gauge-fixed via an operator version of the usual Faddeev-Popov procedure.
We note that a conditional probability interpretation of the physical states is possible, so that both formalisms are examples of quantum mechanics with a relational dynamics.
arXiv Detail & Related papers (2023-02-15T19:00:09Z) - 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) - Localized non-relativistic quantum systems in curved spacetimes: a
general characterization of particle detector models [0.0]
We provide a consistent way of describing a localized non-relativistic quantum system undergoing a timelike trajectory in a curved spacetime.
This framework naturally provides a recipe for mapping a quantum theory defined in a non-relativistic background to a theory around a timelike trajectory in curved spacetimes.
We then apply our formalism to particle detector models, that is, to the case where the non-relativistic quantum system is coupled to a quantum field in a curved background.
arXiv Detail & Related papers (2022-06-02T18:00:31Z) - Entanglement dynamics of spins using a few complex trajectories [77.34726150561087]
We consider two spins initially prepared in a product of coherent states and study their entanglement dynamics.
We adopt an approach that allowed the derivation of a semiclassical formula for the linear entropy of the reduced density operator.
arXiv Detail & Related papers (2021-08-13T01:44:24Z) - From geometry to coherent dissipative dynamics in quantum mechanics [68.8204255655161]
We work out the case of finite-level systems, for which it is shown by means of the corresponding contact master equation.
We describe quantum decays in a 2-level system as coherent and continuous processes.
arXiv Detail & Related papers (2021-07-29T18:27:38Z) - Quantum particle across Grushin singularity [77.34726150561087]
We study the phenomenon of transmission across the singularity that separates the two half-cylinders.
All the local realisations of the free (Laplace-Beltrami) quantum Hamiltonian are examined as non-equivalent protocols of transmission/reflection.
This allows to comprehend the distinguished status of the so-called bridging' transmission protocol previously identified in the literature.
arXiv Detail & Related papers (2020-11-27T12:53:23Z) - Equivalence of approaches to relational quantum dynamics in relativistic
settings [68.8204255655161]
We show that the trinity' of relational quantum dynamics holds in relativistic settings per frequency superselection sector.
We ascribe the time according to the clock subsystem to a POVM which is covariant with respect to its (quadratic) Hamiltonian.
arXiv Detail & Related papers (2020-07-01T16:12:24Z) - Feynman Propagator for a System of Interacting Scalar Particles in the
Fokker Theory [62.997667081978825]
The functional integral on the generalized phase space is defined as the initial one in quantum theory.
The measure of integration in the generalized configuration space of world particle lines is determined.
A modification of the propagator is proposed, in which the role of independent time parameters is taken by the time coordinates of the particles in Minkowski space.
arXiv Detail & Related papers (2020-02-10T09:09:45Z)
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.