Results 11 to 20 of about 1,721 (102)

Lower bound for the ground state energy of the no-pair Hamiltonian [PDF]

open access: yes, 1997
A lower bound for the ground state energy of a one particle relativistic Hamiltonian - sometimes called no-pair operator - is provided.Comment: 5 pages, 1 figure, 1 table, Latex2e (amssymb,amsmath ...
Bethe   +15 more
core   +2 more sources

On representations of Lie algebras of a generalized Tavis‐Cummings model

open access: yesJournal of Applied Mathematics, Volume 2003, Issue 1, Page 55-64, 2003., 2003
Consider the Lie algebras Lr,t s:[K1,K2]=sK3, [K3, K1] = rK1, [K3, K2] = −rK2, [K3, K4] = 0, [K4, K1] = −tK1, and [K4, K2] = tK2, subject to the physical conditions, K3 and K4 are real diagonal operators representing energy, K2=K1†, and the Hamiltonian H = ω1K3 + (ω1 + ω2)K4 + λ(t)(K1eiΦ + K2eiΦ) is a Hermitian operator.
L. A. M. Hanna
wiley   +1 more source

Nonautonomous Klein–Gordon–Maxwell systems in a bounded domain

open access: yesAdvances in Nonlinear Analysis, 2014
This paper deals with the Klein–Gordon–Maxwell system in a bounded spatial domain with a nonuniform coupling. We discuss the existence of standing waves in equilibrium with a purely electrostatic field, assuming homogeneous Dirichlet boundary conditions ...
d'Avenia Pietro   +2 more
doaj   +1 more source

Mass Concentration and Asymptotic Uniqueness of Ground State for 3-Component BEC with External Potential in ℝ2

open access: yesAdvanced Nonlinear Studies, 2021
We investigate the ground states of 3-component Bose–Einstein condensates with harmonic-like trapping potentials in ℝ2{\mathbb{R}^{2}}, where the intra-component interactions μi{\mu_{i}} and the inter-component interactions βi⁢j=βj⁢i{\beta_{ij}=\beta_{ji}
Kong Yuzhen, Wang Qingxuan, Zhao Dun
doaj   +1 more source

On the method of pseudopotential for Schrödinger equation with nonlocal boundary conditions

open access: yesAbstract and Applied Analysis, Volume 6, Issue 6, Page 329-338, 2001., 2001
For stationary Schrödinger equation in ℝ n with the finite potential the singular pseudopotential is constructed in the form allowing us to find wave functions. The method does not require the knowledge of the explicit form of a potential and assumes only knowledge of the scattering amplitude for fixed level of energy.
Yuriy Valentinovich Zasorin
wiley   +1 more source

Well-posedness for the fourth-order Schrödinger equations with quadratic nonlinearity

open access: yesAdvances in Differential Equations, 2011
This paper is concerned with 1-D quadratic semilinear fourth-order Schrödinger equations. Motivated by the quadratic Schrödinger equations in the pioneer work of Kenig-Ponce-Vega [12], three bilinearities uv, uv, uv for functions u, v : R× [0, T ] 7→ C ...
Jiqiang Zheng
semanticscholar   +1 more source

Remarks on the blow-up for the Schr\ [PDF]

open access: yes, 2004
In this paper we concentrate on the analysis of the critical mass blowing-up solutions for the cubic focusing Schrodinger equation with Dirichlet boundary condi- tions, posed on a plane domain.
V. Banica
semanticscholar   +1 more source

On a logarithmic Hartree equation

open access: yesAdvances in Nonlinear Analysis, 2019
We study the existence of radially symmetric solutions for a nonlinear planar Schrödinger-Poisson system in presence of a superlinear reaction term which doesn’t satisfy the Ambrosetti-Rabinowitz condition. The system is re-written as a nonlinear Hartree
Bernini Federico, Mugnai Dimitri
doaj   +1 more source

Multiplicity and concentration results for magnetic relativistic Schrödinger equations

open access: yesAdvances in Nonlinear Analysis, 2019
In this paper, we consider the following magnetic pseudo-relativistic Schrödinger ...
Xia Aliang
doaj   +1 more source

A quantum route to Hamilton–Jacobi equation: comments and remarks

open access: yes, 2016
We consider the short-wave limit of evolutionary wave equations to derive the Hamilton–Jacobi equation. In particular we consider how to get wave mechanics from the abstract picture on Hilbert spaces.
J. Cariñena   +4 more
semanticscholar   +1 more source

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