Results 11 to 20 of about 680 (193)

A growth estimate for the monodromy matrix of a canonical system

open access: yesJournal of Spectral Theory, 2023
We investigate the spectrum of 2-dimensional canonical systems in the limit circle case. It is discrete and, by the Krein–de Branges formula, cannot be more dense than the integers. But in many cases it will be more sparse. The spectrum of a particular selfadjoint realisation coincides with the zeroes of one entry of the monodromy matrix of the system.
Pruckner, Raphael, Woracek, Harald
openaire   +4 more sources

Zero modes method and form factors in quantum integrable models

open access: yesNuclear Physics B, 2015
We study integrable models solvable by the nested algebraic Bethe ansatz and possessing GL(3)-invariant R-matrix. Assuming that the monodromy matrix of the model can be expanded into series with respect to the inverse spectral parameter, we define zero ...
S. Pakuliak, E. Ragoucy, N.A. Slavnov
doaj   +2 more sources

Iterative construction of eigenfunctions of the monodromy matrix for $SL(2,\mathbb {C})$ magnet [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2014
Eigenfunctions of the matrix elements of the monodromy matrix provide a convenient basis for studies of spin chain models. We present an iterative method for constructing the eigenfunctions in the case of the SL(2,C) spin chains. We derived an explicit integral representation for the eigenfunctions and calculated the corresponding scalar products ...
Derkachov, S. E., Manashov, A. N.
openaire   +3 more sources

Detecting period-doubling bifurcation: an approximate monodromy matrix approach [PDF]

open access: yesAutomatica, 2001
A quasi-analytical approach is developed for detecting period-doubling bifurcation emerging near a Hopf bifurcation point. The new algorithm employs higher-order Harmonic Balance Approximations (HBAs) to compute the monodromy matrix, useful for the study of limit cycle bifurcations.
Daniel W. Berns   +2 more
openaire   +3 more sources

A note on gl2 $$ \mathfrak{g}{\mathfrak{l}}_2 $$-invariant Bethe vectors

open access: yesJournal of High Energy Physics, 2018
We consider gl2 $$ \mathfrak{g}{\mathfrak{l}}_2 $$-invariant quantum integrable models solvable by the algebraic Bethe ansatz. We show that the form of on-shell Bethe vectors is preserved under certain twist transformations of the monodromy matrix.
S. Belliard, N. A. Slavnov
doaj   +2 more sources

Nonlinear Dynamics and Stability Analysis of a Three-Cell Flying Capacitor DC-DC Converter

open access: yesApplied Sciences, 2021
This paper presents a study of the nonlinear dynamic behavior a flying capacitor four-level three-cell DC-DC buck converter. Its stability analysis is performed and its stability boundaries is determined in the multi-dimensional paramertic space.
Abdelali El Aroudi   +3 more
doaj   +2 more sources

Two-step control of wall mode and the monodromy matrix

open access: yesPhysics Letters A, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tasso, H., Throumoulopoulos, G.
core   +6 more sources

The classical Yang–Baxter equation and the associated Yangian symmetry of gauged WZW-type theories

open access: yesNuclear Physics B, 2014
We construct the Lax-pair, the classical monodromy matrix and the corresponding solution of the Yang–Baxter equation, for a two-parameter deformation of the Principal chiral model for a simple group. This deformation includes as a one-parameter subset, a
Georgios Itsios   +3 more
doaj   +4 more sources

On the universality of late-time correlators in semi-classical 2d CFTs [PDF]

open access: yesJournal of High Energy Physics, 2018
In the framework of the AdS3/ CFT2 correspondence, we present a systematic analysis of the late time thermalization of a two dimensional CFT state created by insertion of small number of heavy operators on the vacuum. We show that at late Lorentzian time,
Souvik Banerjee   +2 more
doaj   +2 more sources

Normal modes of the small-amplitude oscillon

open access: yesJournal of High Energy Physics
Consider a classical (1+1)-dimensional oscillon of small amplitude ϵ. To all orders in ϵ, the oscillon solution is exactly periodic. We study small perturbations of such periodic configurations.
Jarah Evslin   +3 more
doaj   +5 more sources

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