Results 21 to 30 of about 2,610,775 (169)

Maverick mathematician: the life and science of J.E. Moyal

open access: yes, 2006
J.E. Moyal has been pronounced ‘one of Australia’s most remarkable thinkers’. Yet, he was, essentially, a scientific maverick. Educated in a modest high school in Tel Aviv, he took himself to France to train as an engineer, statistician and mathematician
Moyal, Ann
core   +2 more sources

Producto de Groenewold-von Neumann mediante una transformada de Segal-Bargmann

open access: yesRevista Integración, 2015
Usando técnicas de cuantización geométrica, obtenemos el producto de funciones en R2, primeramente introducido por von Neumann y posteriormente reintroducido por Groenewold, el cual es la versión integral del producto de Moyal-Weyl.
John B. Moreno
doaj   +1 more source

Late time acceleration in a non-commutative model of modified cosmology

open access: yesPhysics Letters B, 2014
We investigate the effects of non-commutativity between the position–position, position–momentum and momentum–momentum of a phase space corresponding to a modified cosmological model.
B. Malekolkalami, K. Atazadeh, B. Vakili
doaj   +1 more source

A GENERAL FORMULATION OF THE MOYAL AND VOROS PRODUCTS AND ITS PHYSICAL INTERPRETATION [PDF]

open access: yesModern Physics Letters A, 2012
A unifying perspective on the Moyal and Voros products and their physical meanings has been recently presented in the literature, where the Voros formulation admits a consistent physical interpretation. We define a star product ⋆, in terms of an antisymmetric fixed matrix Θ, and an arbitrary symmetric matrix Φ, that is a generalization of the Moyal ...
Gouba, Laure   +2 more
openaire   +3 more sources

A product form for the general stochastic matching model

open access: yes, 2021
International audienceAbstract We consider a stochastic matching model with a general compatibility graph, as introduced by Mairesse and Moyal (2016).
Moyal, Pascal   +2 more
core   +1 more source

Computing in string field theory using the Moyal star product [PDF]

open access: yesPhysical Review D, 2002
Using the Moyal star product, we define open bosonic string field theory carefully, with a cutoff, for any number of string oscillators and any oscillator frequencies. Through detailed computations, such as Neumann coefficients for all string vertices, we show that the Moyal star product is all that is needed to give a precise definition of string ...
Bars, Itzhak, Matsuo, Yutaka
openaire   +2 more sources

Moyal star product approach to the Bohr-Sommerfeld approximation [PDF]

open access: yesJournal of Physics A: Mathematical and General, 2004
The Bohr-Sommerfeld approximation to the eigenvalues of a one-dimensional quantum Hamiltonian is derived through order $\hbar^2$ (i.e., including the first correction term beyond the usual result) by means of the Moyal star product. The Hamiltonian need only have a Weyl transform (or symbol) that is a power series in $\hbar$, starting with $\hbar^0 ...
Cargo, Matthew   +4 more
openaire   +4 more sources

Matter Chern Simons theories in a background magnetic field

open access: yesJournal of High Energy Physics, 2019
We study large N 2+1 dimensional fermions in the fundamental representation of an SU(N) k Chern Simons gauge group in the presence of a uniform background magnetic field for the U (1) global symmetry of this theory.
Indranil Halder, Shiraz Minwalla
doaj   +1 more source

Moyal brackets, star products and the generalised Wigner function [PDF]

open access: yesChaos, Solitons & Fractals, 1999
The Wigner-Weyl- Moyal approach to Quantum Mechanics is recalled, and similarities to classical probability theory emphasised. The Wigner distribution function is generalised and viewed as a construction of a bosonic object, a target space co-ordinate, for example, in terms of a bilinear convolution of two fermionic objects, e.g. a quark antiquark pair.
openaire   +3 more sources

The Grammatical Structure of Scientific Revolutions

open access: yesTheoria, EarlyView.
ABSTRACT In this article, I examine the structural parallels between Thomas Kuhn's philosophy of science and Ludwig Wittgenstein's later thought, focusing on the idea of grammatical frameworks. My central claim is that Kuhn's concept of paradigm and its later, more language‐centred forms in his philosophy can be read as a Wittgensteinian grammatical ...
Umut Morkoç
wiley   +1 more source

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