Results 31 to 40 of about 692,618 (182)

Integrable spin-boson interaction in the Tavis-Cummings model from a generic boundary twist [PDF]

open access: yes, 2004
We construct models describing interaction between a spin $s$ and a single bosonic mode using a quantum inverse scattering procedure. The boundary conditions are generically twisted by generic matrices with both diagonal and off-diagonal entries.
31   +26 more
core   +2 more sources

Isospectral flows on a class of finite-dimensional Jacobi matrices

open access: yes, 2012
We present a new matrix-valued isospectral ordinary differential equation that asymptotically block-diagonalizes $n\times n$ zero-diagonal Jacobi matrices employed as its initial condition. This o.d.e.\ features a right-hand side with a nested commutator
Chatterjee, Debasish   +3 more
core   +2 more sources

Semi-analytical Proof of Abelian Dominance on Confinement in the Maximally Abelian Gauge [PDF]

open access: yes, 1998
We study abelian dominance for confinement in terms of the local gluon properties in the maximally abelian (MA) gauge in a semi-analytical manner with the help of the lattice QCD. The global Weyl symmetry persistently remains as the relic of SU($N_c$) in
't Hooft   +70 more
core   +3 more sources

Singular integral operators on tent spaces [PDF]

open access: yes, 2012
We extend the recent results concerning boundedness of the maximal regularity operator on tent spaces. This leads us to develop a singular integral operator theory on tent spaces. Such operators have operator-valued kernels.
Auscher, Pascal   +3 more
core   +3 more sources

Off-diagonal impedance in amorphous wires and application to linear magnetic sensors

open access: yes, 2004
The magnetic-field behaviour of the off-diagonal impedance in Co-based amorphous wires is investigated under the condition of sinusoidal (50 MHz) and pulsed (5 ns rising time) current excitations. For comparison, the field characteristics of the diagonal
Honkura, Y.   +4 more
core   +1 more source

Analysis on the effect of lateral force variation induced by the lubrication condition between wheel and rail for diagonal wheel load unbalance of railway bogie

open access: yesNihon Kikai Gakkai ronbunshu
In recent years, condition monitoring technologies have been widely developed aiming at safer railway operation and maintenance cost reduction. Condition monitoring systems of railway for both from onboard and on track have been widely studied thanks to ...
Takuya MATSUDA   +5 more
doaj   +1 more source

An Enhanced Matrix-Free Secant Method via Predictor-Corrector Modified Line Search Strategies for Solving Systems of Nonlinear Equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2013
Diagonal updating scheme is among the cheapest Newton-like methods for solving system of nonlinear equations. Nevertheless, the method has some shortcomings.
M. Y. Waziri, Z. A. Majid
doaj   +1 more source

Spontaneous current generation in the gapless 2SC phase

open access: yes, 2006
It is found that, except chromomagnetic instability, the gapless 2SC phase also exhibits a paramagnetic response to the perturbation of an external color neutral baryon current.
A. I. Larkin   +4 more
core   +1 more source

Discrete decompositions for bilinear operators and almost diagonal conditions [PDF]

open access: yesTransactions of the American Mathematical Society, 2001
The authors establish a general sufficient condition for boundedness of a bilinear singular integral operator based on extensions of the matrix-boundedness methods of Frazier and Jawerth for linear singular integrals to the case of bilinear operators. One of the key ingredients is the notion of a partial transpose: if \(B\) is a bilinear operator on a ...
Grafakos, Loukas, Torres, Rodolfo H.
openaire   +3 more sources

Hamiltonian Formalism of Particular Bimetric Gravity Model

open access: yes, 2012
In this short note we perform the Hamiltonian analysis of bimetric gravity with one particular form of potential between two metrics. We find that this theory have eight secondary constraints.
Kluson, J.
core   +1 more source

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