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We study the Yang-Baxter algebras $A(K,X,r)$ associated to finite set-theoretic solutions $(X,r)$ of the braid relations. We introduce an equivalent set of quadratic relations $\Re\subseteq G$, where $G$ is the reduced Gr\"obner basis of…

Quantum Algebra · Mathematics 2024-09-06 Tatiana Gateva-Ivanova , Shahn Majid

We formulate and classify super Satake diagrams under a mild assumption, building on arbitrary Dynkin diagrams for finite-dimensional basic Lie superalgebras. We develop a theory of quantum supersymmetric pairs associated to the super…

Quantum Algebra · Mathematics 2025-08-25 Yaolong Shen , Weiqiang Wang

We explore two distinct methods to introduce integrable defects in a family of integrable sigma-models known as Yang-Baxter models. The first method invokes a modified monodromy matrix encoding an integrable defect separating two integrable…

High Energy Physics - Theory · Physics 2021-12-28 Saskia Demulder , Thomas Raml

We elaborate on the recent suggestion to consider averaging of Cauchy identities for the Schur functions over power sum variables. This procedure has apparent parallels with the Borel transform, only it changes the number of combinatorial…

High Energy Physics - Theory · Physics 2023-07-03 A. Mironov , A. Morozov

We continue investigating the superintegrability property of matrix models, i.e. factorization of the matrix model averages of characters. This paper focuses on the Gaussian Hermitian example, where the role of characters is played by the…

High Energy Physics - Theory · Physics 2023-01-26 A. Mironov , A. Morozov

We give new proofs of the rationality of the N=1 superconformal minimal model vertex operator superalgebras and of the classification of their modules in both the Neveu-Schwarz and Ramond sectors. For this, we combine the standard free…

High Energy Physics - Theory · Physics 2024-12-05 Olivier Blondeau-Fournier , Pierre Mathieu , David Ridout , Simon Wood

We discuss orbifold version of the Schur index defined as the supersymmetric partition function in S^3/Z_n x S^1. We first give a general formula for Lagrangian theories obtained by localization technique, and then suggest a generalization…

High Energy Physics - Theory · Physics 2019-12-06 Yosuke Imamura

We resolve the `baxterization' problem with the help of the automorphism group of the Yang-Baxter (resp. star-triangle, tetrahedron, \dots) equations. This infinite group of symmetries is realized as a non-linear (birational) Coxeter group…

High Energy Physics - Theory · Physics 2009-10-28 C. Viallet

In this work we consider colour-ordered correlation functions of the fields in integrable planar gauge theories such as N=4 supersymmetric Yang-Mills theory with the aim to establish Ward-Takahashi identities corresponding to Yangian…

High Energy Physics - Theory · Physics 2018-08-22 Niklas Beisert , Aleksander Garus

We discuss a new approach to putting supersymmetric theories on the lattice. The basic idea is to start from a {\it twisted} formulation of the underlying supersymmetric theory in which the fermions are represented as grassmann valued…

High Energy Physics - Lattice · Physics 2016-09-01 Simon Catterall

We consider a special class of quantum non-dynamical $R$-matrices in the fundamental representation of ${\rm GL}_N$ with spectral parameter given by trigonometric solutions of the associative Yang-Baxter equation. In the simplest case $N=2$…

Mathematical Physics · Physics 2019-07-12 T. Krasnov , A. Zotov

We establish a correspondence between the invariant subsets of a non-degenerate symmetric set-theoretical solution of the quantum Yang-Baxter equation and the parabolic subgroups of its structure group, equipped with its canonical Garside…

Group Theory · Mathematics 2010-09-20 Fabienne Chouraqui , Eddy Godelle

We introduce the notion of quantum Schur (or $q$-Schur) superalgebras. These algebras share certain nice properties with $q$-Schur algebras such as base change property, existence of canonical $\mathbb Z[v,v^{-1}]$-bases, and the duality…

Quantum Algebra · Mathematics 2010-10-20 Jie Du , Hebing Rui

We construct integrability-preserving deformations of the integrable $\sigma$-model coupling together $N$ copies of the Principal Chiral Model. These deformed theories are obtained using the formalism of affine Gaudin models, by applying…

High Energy Physics - Theory · Physics 2020-05-19 Cristian Bassi , Sylvain Lacroix

We study noninvolutive set-theoretic solutions $(X,r)$ of the Yang-Baxter equations in terms of the properties of the canonically associated algebraic objects-the braided monoid $S(X,r)$, the quadratic Yang-Baxter algebra $A= A(\textbf{k},…

Quantum Algebra · Mathematics 2025-08-19 Tatiana Gateva-Ivanova

We present resent results regarding invertible, non-degenerate solutions of the set-theoretic Yang-Baxter and reflection equations. We recall the notion of braces and we present and prove various fundamental properties required for the…

Quantum Algebra · Mathematics 2025-05-21 Anastasia Doikou

In this note we provide proofs of various expressions for expectation values of symmetric polynomials in $\beta$-deformed eigenvalue models with quadratic, linear, and logarithmic potentials. The relations we derive are also referred to as…

High Energy Physics - Theory · Physics 2022-09-28 Aditya Bawane , Pedram Karimi , Piotr Sułkowski

We give a new characterization of the peak subalgebra of the algebra of quasisymmetric functions and use this to construct a new basis for this subalgebra. As an application of these results we obtain a combinatorial formula for the…

Combinatorics · Mathematics 2014-07-01 Francesco Brenti , Fabrizio Caselli

We construct the XX and Hubbard-like models based on unitary superalgebras gl(N|M) generalizing Shastry's and Maassarani's approach. We introduce the R-matrix of the gl(N|M) XX-type model; the one of the Hubbard-like model is defined by…

High Energy Physics - Theory · Physics 2007-12-13 James Drummond , Giovanni Feverati , Luc Frappat , Eric Ragoucy

We give a recursive method for computing all values of a basis of Whittaker functions for unramified principal series invariant under an Iwahori or parahoric subgroup of a split reductive group $G$ over a nonarchimedean local field $F$.…

Representation Theory · Mathematics 2020-06-09 Ben Brubaker , Valentin Buciumas , Daniel Bump , Henrik P. A. Gustafsson