Results 11 to 20 of about 297 (147)

Twisted rational r-matrices and algebraic Bethe ansatz: Application to generalized Gaudin and Richardson models

open access: yesNuclear Physics B, 2021
In the present paper we develop the algebraic Bethe ansatz approach to the case of non-skew-symmetric gl(2)⊗gl(2)-valued Cartan-non-invariant classical r-matrices with spectral parameters. We consider the two families of these r-matrices, namely, the two
T. Skrypnyk, N. Manojlović
doaj   +1 more source

Red Blood Cell Membrane Mechanics Using Discrete Exterior Calculus (DEC) and Optimization. [PDF]

open access: yesInt J Numer Method Biomed Eng
We present a novel DEC approach for calculating RBC shapes applicable to other cell types and membrane problems. We derive an energy minimization equation that can be solved semi‐implicitly, and a Lie derivative method to control node spacing. This novel work should aid computational modeling in many biological situations.
Afas KC, Goldman D.
europepmc   +2 more sources

Polyadic Braid Operators and Higher Braiding Gates

open access: yesUniverse, 2021
A new kind of quantum gates, higher braiding gates, as matrix solutions of the polyadic braid equations (different from the generalized Yang–Baxter equations) is introduced. Such gates lead to another special multiqubit entanglement that can speed up key
Steven Duplij, Raimund Vogl
doaj   +1 more source

Conics from the Cartan Decomposition of SO(2,1)

open access: yesMathematics, 2023
The aim of this paper is to introduce and study the class of conics provided by the symmetric matrices of the Cartan decomposition of the Lie group SO(2,1).
Mircea Crasmareanu
doaj   +1 more source

Wargaming with Quadratic Forms and Brauer Configuration Algebras

open access: yesMathematics, 2022
Recently, Postnikov introduced Bert Kostant’s game to build the maximal positive root associated with the quadratic form of a simple graph. This result, and some other games based on Cartan matrices, give a new version of Gabriel’s theorem regarding ...
Agustín Moreno Cañadas   +2 more
doaj   +1 more source

Geometrizing non-relativistic bilinear deformations

open access: yesJournal of High Energy Physics, 2021
We define three fundamental solvable bilinear deformations for any massive non-relativistic 2d quantum field theory (QFT). They include the T T ¯ $$ \mathrm{T}\overline{\mathrm{T}} $$ deformation and the recently introduced hard rod deformation.
Dennis Hansen, Yunfeng Jiang, Jiuci Xu
doaj   +1 more source

Wearable and Implantable Devices for Continuous Monitoring of Muscle Physiological Activity: A Review. [PDF]

open access: yesAdv Sci (Weinh)
Recent advances in materials and device engineering enable continuous, real‐time monitoring of muscle activity via wearable and implantable systems. This review critically summarizes emerging technologies for tracking electrophysiological, biomechanical, and oxygenation signals, outlines fundamental principles, and highlights key challenges and ...
Liao Z   +4 more
europepmc   +2 more sources

Gaudin-type models, non-skew-symmetric classical r-matrices and nested Bethe ansatz

open access: yesNuclear Physics B, 2015
We consider quantum integrable systems associated with the Lie algebra gl(n) and Cartan-invariant non-dynamical non-skew-symmetric classical r-matrices.
T. Skrypnyk
doaj   +1 more source

Cartan matrices and Brauer's k(B)-conjecture V

open access: yesJournal of Algebra, 2022
26 pages, 4 tables, many matrices :-)
Cesare Giulio Ardito, Benjamin Sambale
openaire   +3 more sources

CARTAN CALCULUS VIA PAULI MATRICES [PDF]

open access: yesInternational Journal of Modern Physics A, 2003
In this paper we will provide a new operatorial counterpart of the path-integral formalism of classical mechanics developed in recent years. We call it new because the Jacobi fields and forms will be realized via finite dimensional matrices. As a byproduct of this we will prove that all the operations of the Cartan calculus, such as the exterior ...
openaire   +3 more sources

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