Results 101 to 110 of about 680 (193)

Integrability in heavy quark effective theory

open access: yesJournal of High Energy Physics, 2018
It was found that renormalization group equations in the heavy-quark effective theory (HQET) for the operators involving one effective heavy quark and light degrees of freedom are completely integrable in some cases and are related to spin chain models ...
Vladimir M. Braun   +2 more
doaj   +1 more source

A Time-Domain Asymptotic Approach to Predict Saddle-Node and Period Doubling Bifurcations in Pulse Width Modulated Piecewise Linear Systems

open access: yesMATEC Web of Conferences, 2014
In this paper closed-form conditions for predicting the boundary of period-doubling (PD) bifurcation or saddle-node (SN) bifurcation in a class of PWM piecewise linear systems are obtained from a time-domain asymptotic approach.
El Aroudi A.
doaj   +1 more source

Stability analysis and control of bifurcations of parallel connected DC/DC converters using the monodromy matrix [PDF]

open access: yes
The paper studies the stability of parallel DC/DC converters using the concept of monodromy matrix (the state transition matrix for one complete cycle), whose eigenvalues are the Floquet multipliers.
Banerjee S   +4 more
core  

Application of first-order sensitivity analysis to stabilisation of unstable continuous multi-degree-of-freedom parametric periodic systems

open access: yesStudia Geotechnica et Mechanica
From a practical point of view, the most important feature of a parametric periodic system is the instability phenomenon. Unlike in systems with constant coefficients, in which only points of instability exist, in parametric systems, whole areas of ...
Wójcicki Zbigniew
doaj   +1 more source

From Quantum Curves to Topological String Partition Functions. [PDF]

open access: yesCommun Math Phys, 2023
Coman I, Pomoni E, Teschner J.
europepmc   +1 more source

Combinatorics of Lax Objects in Bethe Ansatz

open access: yes, 2015
Algebraic Bethe Ansatz, also known as quantum inverse scattering method, is a consistent tool based on the YangBaxter equation which allows to construct Bethe Ansatz exact solutions.
Stagraczyński, R., R. Stagraczynski
core   +1 more source

The monodromy matrix and its poisson brackets in supersymmetric Liouville-string theory

open access: yesPhysics Letters B, 1984
Abstract We determine the classical supersymmetric version of the new factorization relation recently discovered by Gervais and Neveu in their study of the quantum Liouville-string field theory.
openaire   +1 more source

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