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We present a lattice theory with an exact fermionic symmetry, which mixes the link and the fermionic variables. The staggered fermionic variables may be reconstructed into a Majorana fermion in the continuum limit. The gauge action has a…

High Energy Physics - Lattice · Physics 2014-11-17 K. Itoh , M. Kato , H. Sawanaka , H. So , N. Ukita

We present an entirely new approach towards a realization of the supersymmetric Yang-Mills theory on the lattice. The action consists of the staggered fermion and the plaquette variables distributed in the Euclidean space with a particular…

High Energy Physics - Lattice · Physics 2009-11-07 Katsumi Itoh , Mitsuhiro Kato , Hideyuki Sawanaka , Hiroto So , Naoya Ukita

Universal Lax pairs of the root type with spectral parameter and independent coupling constants for twisted non-simply laced Calogero-Moser models are constructed. Together with the Lax pairs for the simply laced models and untwisted…

High Energy Physics - Theory · Physics 2009-10-31 A. J. Bordner , R. Sasaki

We present a noncommutative generalization of Lax formalism of U(N) principal chiral model in terms of a one-parameter family of flat connections. The Lax formalism is further used to derive a set of parametric noncommutative B\"{a}cklund…

High Energy Physics - Theory · Physics 2008-11-26 U. Saleem , M. Hassan

We present a simple novel construction of recursion operators for integrable multidimensional dispersionless systems that admit a Lax pair whose operators are linear in the spectral parameter and do not involve the derivatives with respect…

Analysis of PDEs · Mathematics 2017-09-29 A. Sergyeyev

In this paper, we complete the classification of 4 x 4 solutions of the Yang-Baxter equation. Regular solutions were recently classified and in this paper we find the remaining non-regular solutions. We present several new solutions, then…

Mathematical Physics · Physics 2026-05-07 Marius de Leeuw , Vera Posch

Higlighting certain similarities between the two-dimensional Luttinger liquid model and the effective fermionic theory obtained from the hypercharge Lagrangian, we argue the case for a new type of Standard Model extension.

High Energy Physics - Phenomenology · Physics 2007-05-23 J. D. Bashford

In a previous article [N. Delice, F.W. Nijhoff and S. Yoo-Kong, J. Phys. A: Math. Theor. 48(3) (2015), 035206] a novel class of elliptic Lax pairs for integrable lattice equations was introduced. The present article proposes a…

Exactly Solvable and Integrable Systems · Physics 2016-05-04 Frank Nijhoff , Neslihan Delice

We propose a lattice field theory formulation which overcomes some fundamental difficulties in realizing exact supersymmetry on the lattice. The Leibniz rule for the difference operator can be recovered by defining a new product on the…

High Energy Physics - Lattice · Physics 2018-04-18 Alessandro D'Adda , Noboru Kawamoto , Jun Saito

It is shown that free lattice fermions defined by overlap Dirac operator fulfill the Osterwalder-Schrader reflection positivity condition with respect to the link-reflection. The proof holds true in non-gauge models with interactions such…

High Energy Physics - Lattice · Physics 2010-12-24 Yoshio Kikukawa , Kouta Usui

In his famous ASM paper, Kuperberg uses a skein relation to give an algebraic proof of a Yang-Baxter equation where the Boltzmann weights satisfy the field-free condition. In this paper, we use Kuperberg's techniques to give proofs of a few…

Combinatorics · Mathematics 2022-12-02 Chavdar Lalov

The free-fermion point refers to a $\operatorname{GL}(2)\times\operatorname{GL}(1)$ parametrized Yang-Baxter equation within the six-vertex model. It has been known for a long time that this is connected with the quantum group…

Representation Theory · Mathematics 2025-07-03 Ben Brubaker , Daniel Bump , Henrik P. A. Gustafsson

We expand the completeness study instigated in [J. Math. Phys. 50 (2009), 103516, 29 pages] which found all $2\times2$ Lax pairs with non-zero, separable terms in each entry of each Lax matrix, along with the most general nonlinear systems…

Exactly Solvable and Integrable Systems · Physics 2011-09-15 Mike C. Hay

In this paper I construct lattice models with an underlying $U_q osp(2,2)$ superalgebra symmetry. I find new solutions to the graded Yang-Baxter equation. These {\it trigonometric} $R$-matrices depend on {\it three} continuous parameters,…

High Energy Physics - Theory · Physics 2009-10-28 Ziad Maassarani

One of the features of Baxter's Q-operators for many closed spin chain models is that all transfer matrices arise as products of two Q-operators with shifts in the spectral parameter. In the representation-theoretical approach to…

Mathematical Physics · Physics 2024-03-25 Alec Cooper , Bart Vlaar , Robert Weston

The Lax pair for the field analogue of the classical spin elliptic Calogero-Moser is proposed. Namely, using the previously known Lax matrix we suggest an ansatz for the accompany matrix. The presented construction is valid when the matrix…

Exactly Solvable and Integrable Systems · Physics 2025-07-22 A. Zotov

A generalization of the Yang-Baxter equation is proposed. It enables to construct integrable two-dimensional lattice models with commuting two-layer transfer matrices, while single-layer ones are not necessarily commutative. Explicit…

High Energy Physics - Theory · Physics 2015-06-26 R. M. Kashaev , Yu. G. Stroganov

Many of the known solutions of the Yang-Baxter equation, which are related to solvable lattice models of vertex- and IRF-type, yield representations of the Birman-Wenzl-Murakami algebra. From these, representations of a two-colour…

solv-int · Physics 2008-02-03 Uwe Grimm

We present a generalization of the master solution to the quantum Yang-Baxter equation (obtained recently in arXiv:1006.0651) to the case of multi-component continuous spin variables taking values on a circle. The Boltzmann weights are…

Mathematical Physics · Physics 2015-05-28 Vladimir V. Bazhanov , Sergey M. Sergeev

The general rational solution of the Yang-Baxter equation with the symmetry algebra sl(2) can be represented as the product of the simpler building blocks denoted as R-operators. The R-operators are constructed explicitly and have simple…

Quantum Algebra · Mathematics 2009-01-08 S. E. Derkachov