English
Related papers

Related papers: Weyl Quantization of Fractional Derivatives

200 papers

We obtain approximation formulas for fractional integrals and derivatives of Riemann-Liouville and Marchaud types with a variable fractional order. The approximations involve integer-order derivatives only. An estimation for the error is…

Classical Analysis and ODEs · Mathematics 2013-10-29 Ricardo Almeida , Delfim F. M. Torres

We define a coordinate operator in a QFT-fashion to obtain by a deformation procedure a relativistic Moyal-Weyl spacetime. The idea is extracted from recent progress in deformation theory concerning the emergence of the quantum plane of the…

Mathematical Physics · Physics 2015-02-05 Albert Much

A review of fundamentals and physical applications of fractional quantum mechanics has been presented. Fundamentals cover fractional Schr\"odinger equation, quantum Riesz fractional derivative, path integral approach to fractional quantum…

Mathematical Physics · Physics 2010-09-29 Nick Laskin

In this paper a generalization of Weyl quantization which maps a dynamical operator in a function space to a dynamical superoperator in an operator space is suggested. Quantization of dynamical operator, which cannot be represented as…

Quantum Physics · Physics 2007-05-23 Vasily E. Tarasov

We consider the integral and derivative operators of tempered fractional calculus, and examine their analytic properties. We discover connections with the classical Riemann-Liouville fractional calculus and demonstrate how the operators may…

Classical Analysis and ODEs · Mathematics 2019-12-12 Arran Fernandez , Ceren Ustaoglu

Suppose q is a complex number of modulus one and different from 1,-1. Let O(R^2_q) be the *-algebra with two hermitean generators x and y satisfying the relation xy=qyx. Using operator representations of the *-algebra O(R^2_q) on Hilbert…

Operator Algebras · Mathematics 2016-09-07 Konrad Schmuedgen

As an extension of Gabor signal processing, the covariant Weyl-Heisenberg integral quantization is implemented to transform functions on the eight-dimensional phase space $\left(x,k\right)$ into Hilbertian operators. The…

Quantum Physics · Physics 2022-06-22 Gilles Cohen-Tannoudji , Jean-Pierre Gazeau , Célestin Habonimana , Juma Shabani

This paper is devoted to the study of quasi-periodic properties of fractional order integrals and derivatives of periodic functions. Considering Riemann-Liouville and Caputo definitions, we discuss when the fractional derivative and when…

Classical Analysis and ODEs · Mathematics 2015-07-21 Iván Area , Jorge Losada , Juan J. Nieto

We study operators that are generalizations of the classical Riemann-Liouville fractional integral, and of the Riemann-Liouville and Caputo fractional derivatives. A useful formula relating the generalized fractional derivatives is proved,…

Classical Analysis and ODEs · Mathematics 2012-10-29 Tatiana Odzijewicz , Agnieszka B. Malinowska , Delfim F. M. Torres

Fractional derivative can be defined as a fractional power of derivative. The commutator (i/h)[H, ], which is used in the Heisenberg equation, is a derivation on a set of observables. A derivation is a map that satisfies the Leibnitz rule.…

Quantum Physics · Physics 2009-11-13 Vasily E. Tarasov

A generalization of canonical quantization which maps a dynamical operator to a dynamical superoperator is suggested. Weyl quantization of dynamical operator, which cannot be represented as Poisson bracket with some function, is considered.…

Quantum Physics · Physics 2009-11-10 Vasily E. Tarasov

The objective of this paper is to derive analytical solutions of fractional order Laplace, Poisson and Helmholtz equations in two variables derived from the corresponding standard equations in two dimensions by replacing the integer order…

Mathematical Physics · Physics 2014-08-11 Ram K. Saxena , Zivorad Tomovski , Trifce Sandev

Recently, some problems have been found in the definition of the partial derivative in the case of the presence of both explicit and implicit functional dependencies in the classical analysis. In this talk we investigate the influence of…

Mathematical Physics · Physics 2007-05-23 Valeri V. Dvoeglazov

We present a phase space formulation of quantum mechanics in the Schr\"odinger representation and derive the associated Weyl pseudo-differential calculus. We prove that the resulting theory is unitarily equivalent to the standard…

Mathematical Physics · Physics 2012-12-14 Nuno Costa Dias , Maurice de Gosson , Franz Luef , João Nuno Prata

We introduce the concept of fractional derivative of Riemann-Liouville on time scales. Fundamental properties of the new operator are proved, as well as an existence and uniqueness result for a fractional initial value problem on an…

Classical Analysis and ODEs · Mathematics 2015-12-24 Nadia Benkhettou , Ahmed Hammoudi , Delfim F. M. Torres

We prove Noether-type theorems for fractional isoperimetric variational problems with Riemann-Liouville derivatives. Both Lagrangian and Hamiltonian formulations are obtained. Illustrative examples, in the fractional context of the calculus…

Optimization and Control · Mathematics 2013-07-09 Gastao S. F. Frederico , Delfim F. M. Torres

By a quantum version of the Arnold transformation of classical mechanics, all quantum dynamical systems whose classical equations of motion are non-homogeneous linear second-order ordinary differential equations, including systems with…

Quantum Physics · Physics 2011-02-07 Victor Aldaya , Francisco Cossio , Julio Guerrero , Francisco F. Lopez-Ruiz

The quantum-to-classical transition is considered from the point of view of contractions of associative algebras. Various methods and ideas to deal with contractions of associative algebras are discussed that account for a large family of…

Quantum Physics · Physics 2016-04-20 A. Ibort , V. I. Man'ko , G. Marmo , A. Simoni , C. Stornaiolo , F. Ventriglia

Several quantum proper time derivatives are obtained from the Beck one in the usual framework of relativistic quantum mechanics (spin 1/2 case). The ``scalar Hamiltonians'' of these derivatives should be thought of as the conjugate…

High Energy Physics - Theory · Physics 2010-11-23 Juan P. Aparicio , Fabian H. Gaioli , Edgardo T. Garcia Alvarez

Historically the fractional calculus concept works an extended idea based on the question asked by Guillaume de L'H\^opital to Gottfried Wilhelm Leibniz in 1695 about the notation ${d^nf}/{dx^n}$ for the derivative operator "What if…

Mathematical Physics · Physics 2025-07-08 J. J. A. de Oliveira , C. F. L. Godinho