Mathematical Modelling in Relativity and Quantum Theory

A special issue of Mathematics (ISSN 2227-7390). This special issue belongs to the section "Mathematical Physics".

Deadline for manuscript submissions: 31 May 2024 | Viewed by 912

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Doctor of Physics, Doctor of Mathematics, Instituto de Matemática Multidisciplinar, Universitat Politècnica de València, 46022 Valencia, Spain
Interests: theoretical physics; applied mathematics; astrophysics and cosmology; modified gravity theories

Special Issue Information

Dear Colleagues,

Nowadays, mathematical modelling is an indispensable tool for the successful description and simulation of systems in natural sciences and engineering. Within the field of theoretical physics, applications of relativity and quantum theory are at the forefront of active research and can also be combined with applied mathematics. Numerical relativity, which includes dealing with gravitational wave simulation, and quantum field theory, which describes higher order perturbative corrections of interacting particles, are utilized in  specific mathematical models of ongoing and outstanding importance. Moreover, models for global positioning systems with their engineering challenges, or simulations of elementary mechanical devices in strong gravitational fields that display unprecedented phenomena, are intriguing physical systems to model.

This Special Issue welcomes contributions on applications of relativity and quantum theory, aiming at the description and simulation of interesting physical systems in both realms.

Prof. Dr. Michael M. Tung
Guest Editor

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Keywords

  • relativistic models
  • cosmology
  • analog models of gravity
  • navigational systems
  • quantum effects
  • perturbative QFT

Published Papers (1 paper)

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Research

29 pages, 2152 KiB  
Article
A Quantum Formalism for Abstract Dynamical Systems
by Joan C. Micó
Mathematics 2024, 12(7), 1076; https://doi.org/10.3390/math12071076 - 02 Apr 2024
Viewed by 542
Abstract
This paper presents a quantum formulation for classical abstract dynamical systems (ADS), defined by coupled sets of first-order differential equations. They are referred to as “abstract” because their dynamical variables can be of different interrelated natures, not necessarily corresponding to physics, such as [...] Read more.
This paper presents a quantum formulation for classical abstract dynamical systems (ADS), defined by coupled sets of first-order differential equations. They are referred to as “abstract” because their dynamical variables can be of different interrelated natures, not necessarily corresponding to physics, such as populations, socioeconomic variables, behavioral variables, etc. A classical linear Hamiltonian can be derived for ADS by using Dirac’s dynamics for singular Hamiltonian systems. Also, a corresponding first-order Schrödinger equation (which involves the existence of a system Planck constant particular of each system) can be derived from this Hamiltonian. However, Madelung’s reinterpretation of quantum mechanics, followed by the Bohm and Hiley work, produces no further information about the mathematical formulation of ADS. However, a classical quadratic Hamiltonian can also be derived for ADS, as well as a corresponding second-order Schrödinger equation. In this case, the Madelung reinterpretation of quantum mechanics provides a quantum Hamiltonian that does provide the quantum formulation for ADS, which provides new quantum variables interrelated dynamically with the classical variables. An application case is presented: the one-dimensional autonomous system given by the logistic dynamics. The differences between the classical and the quantum trajectories are highlighted in the context of this application case. Full article
(This article belongs to the Special Issue Mathematical Modelling in Relativity and Quantum Theory)
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