Results 41 to 50 of about 76,709 (184)

Energy methods for Dirac-type equations in two-dimensional Minkowski space

open access: yes, 2018
In this article we develop energy methods for a large class of linear and nonlinear Dirac-type equations in two-dimensional Minkowski space. We will derive existence results for several Dirac-type equations originating in quantum field theory, in ...
Branding, Volker
core   +1 more source

Integration of the negative order Nonlinear Schr¨odinger Equation with self-consistent source

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
This paper focuses on the integrability properties of the negative-order nonlinear Schro¨dinger equation with a source. The source consists of the combination of the eigenfunctions of the corresponding spectral problem for the Dirac system which has not
G.U. Urazboev, I.I. Baltaeva
doaj   +1 more source

Effective quantum dynamics for magnetic fermions [PDF]

open access: yesOpen Communications in Nonlinear Mathematical Physics
We show how to derive an effective nonlinear dynamics, described by the Hartree-Fock equations, for fermionic quantum particles confined to a two-dimensional box and in presence of an external, uniform magnetic field.
Margherita Ferrero, Domenico Monaco
doaj   +1 more source

Dirichlet Type Problem for 2D Quaternionic Time-Harmonic Maxwell System in Fractal Domains

open access: yesAdvances in Mathematical Physics, 2020
We investigate an electromagnetic Dirichlet type problem for the 2D quaternionic time-harmonic Maxwell system over a great generality of fractal closed type curves, which bound Jordan domains in R2.
Yudier Peña Pérez   +3 more
doaj   +1 more source

Causal Classical Theory of Radiation Damping [PDF]

open access: yes, 2001
It is shown how initial conditions can be appropriately defined for the integration of Lorentz-Dirac equations of motion. The integration is performed \QTR{it}{forward} in time. The theory is applied to the case of the motion of an electron in an intense
J. C. WELLS   +3 more
core   +2 more sources

Optical leptons

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We obtain optical vortices with classical orbital momentum ℓ=1 and spin j=±1/2 as exact solutions of a system of nonlinear Maxwell equations (NMEs). Two kinds of Kerr-type media, namely, those with and without linear dispersion of the electric and the ...
Lubomir M. Kovachev
doaj   +1 more source

Nonrelativistic open string and Yang-Mills theory

open access: yesJournal of High Energy Physics, 2021
The classical and quantum worldsheet theory describing nonrelativistic open string theory in an arbitrary nonrelativistic open and closed string background is constructed.
Jaume Gomis, Ziqi Yan, Matthew Yu
doaj   +1 more source

Nonlinear Dirac and diffusion equations in 1 + 1 dimensions from stochastic considerations

open access: yes, 1999
We generalize the method of obtaining the fundamental linear partial differential equations such as the diffusion and Schrodinger equation, Dirac and telegrapher's equation from a simple stochastic consideration to arrive at certain nonlinear form of ...
A. Munier   +9 more
core   +1 more source

Electronic response of graphene to an ultrashort intense terahertz radiation pulse

open access: yesNew Journal of Physics, 2013
We have recently reported a study (Ishikawa 2010 Phys. Rev. B 82 201402) on a nonlinear optical response of graphene to a normally incident terahertz radiation pulse within the massless Dirac fermion (MDF) picture, where we have derived physically ...
Kenichi L Ishikawa
doaj   +1 more source

APPROXIMATION OF POSITIONAL IMPULSE CONTROLS FOR DIFFERENTIAL INCLUSIONS

open access: yesUral Mathematical Journal, 2022
Nonlinear control systems presented as differential inclusions with positional impulse controls are investigated. By such a control we mean some abstract operator with the Dirac function concentrated at each time. Such a control ("running impulse"), as a
Ivan A. Finogenko, Alexander N. Sesekin
doaj   +1 more source

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