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We show that abelian subalgebras of generalized $W_{1+\infty}$ ($GW_{1+\infty}$) algebra gives rise to the multicomponent KP flows. The matrix elements of the related group elements in the fermionic Fock space is expressed as a product of a…

Exactly Solvable and Integrable Systems · Physics 2024-09-04 A. Yu. Orlov

We study spin and super-modular categories systematically as inspired by fermionic topological phases of matter, which are always fermion parity enriched and modelled by spin TQFTs at low energy. We formulate a $16$-fold way conjecture for…

We use a Grassmannian framework to define multi-component tau functions as expectation values of certain multi-component Fermi operators satisfying simple bilinear commutation relations on Clifford algebra. The tau functions contain both…

Exactly Solvable and Integrable Systems · Physics 2008-04-24 Henrik Aratyn , Johan van de Leur

A fermionic representation is given for all the quantities entering in the generating function approach to weighted Hurwitz numbers and topological recursion. This includes: KP and 2D Toda $\tau$-functions of hypergeometric type, which…

Mathematical Physics · Physics 2023-08-08 A. Alexandrov , G. Chapuy , B. Eynard , J. Harnad

Partition functions of some two-dimensional statistical models can be represented by means of Grassmann integrals over loops living on two-dimensional torus. It is shown that those Grassmann integrals are topological invariants, which…

High Energy Physics - Theory · Physics 2007-05-23 C. Klimcik

We investigate induced modules of doublet algebra in (1,p) logarithmic models. We give fermionic formulas for the characters of induced modules and coinvariants with respect to different subalgebras calculated in the irreducible modules.…

Quantum Algebra · Mathematics 2008-10-14 B. L. Feigin , I. Yu. Tipunin

We show that the fermionic matrix model can be realized by $W$-representation. We construct the Virasoro constraints with higher algebraic structures, where the constraint operators obey the Witt algebra and null 3-algebra. The remarkable…

High Energy Physics - Theory · Physics 2021-12-08 Lu-Yao Wang , Rui Wang , Ke Wu , Wei-Zhong Zhao

Framing plays a central role in the evaluation of Wilson loops in theories with Chern-Simons actions. In pure Chern-Simons theory, it guarantees topological invariance, while in theories with matter like ABJ(M), our theory of interest, it…

High Energy Physics - Theory · Physics 2024-12-10 Marco S. Bianchi , Luigi Castiglioni , Silvia Penati , Marcia Tenser , Diego Trancanelli

We introduce the concept of fermionic matrix product operators, and show that they provide a natural representation of fermionic fusion tensor categories. This allows for the classification of two dimensional fermionic topological phases in…

Quantum Physics · Physics 2017-10-17 Dominic J. Williamson , Nick Bultinck , Jutho Haegeman , Frank Verstraete

This is a review of the authors' recent results on an integrable structure of the melting crystal model with external potentials. The partition function of this model is a sum over all plane partitions (3D Young diagrams). By the method of…

Mathematical Physics · Physics 2011-09-01 Toshio Nakatsu , Kanehisa Takasaki

The partition function for unitary two matrix models is known to be a double KP tau-function, as well as providing solutions to the two dimensional Toda hierarchy. It is shown how it may also be viewed as a Borel sum regularization of…

Exactly Solvable and Integrable Systems · Physics 2023-08-02 J. Harnad , A. Yu. Orlov

We obtain the topological expansion of the hermitian matrix model using its representation as a CFT on a hyperelliptic Riemann surface. To each branch point of the Riemann surface we associate an operator which represents a twist field…

High Energy Physics - Theory · Physics 2014-11-20 Ivan Kostov

This paper is the first in the series devoted to evaluation of the partition function in statistical models on graphs with loops in terms of the Berezin/fermion integrals. The paper focuses on a representation of the determinant of a square…

Statistical Mechanics · Physics 2010-05-27 Vladimir Y. Chernyak , Michael Chertkov

We study orbifolds by permutations of two identical N=2 minimal models within the Gepner construction of four dimensional heterotic strings. This is done using the new N=2 supersymmetric permutation orbifold building blocks we have recently…

High Energy Physics - Theory · Physics 2011-08-03 M. Maio , A. N. Schellekens

Let $p$ be a prime. We study the structure of and the inclusion relations among the terms in the monomial lattice in the modular symmetric power representations of $\mathrm{GL}_2(\mathbb{F}_p)$. We also determine the structure of certain…

Representation Theory · Mathematics 2020-11-20 Eknath Ghate , Ravitheja Vangala

In this paper, we introduce a novel and general method for computing partition functions of solvable lattice models with free fermionic Boltzmann weights. The method is based on the ``permutation graph'' and the ``$F$-matrix'': the…

Mathematical Physics · Physics 2022-11-15 Chenyang Zhong

We first obtain the most general and compact parametrization of the unitary transformation diagonalizing any 3 by 3 hermitian matrix H, as a function of its elements and eigenvalues. We then study a special class of fermion mass matrices,…

High Energy Physics - Phenomenology · Physics 2010-04-06 Gilles Couture , Cherif Hamzaoui , Steven S. Y. Lu , Manuel Toharia

We describe the $p$-divisibility transposition for the Fourier coefficients of Hermitian modular forms. The results show that the same phenomenon as that for Siegel modular forms holds for Hermitian modular forms.

Number Theory · Mathematics 2023-12-12 Shoyu Nagaoka

We propose a novel fermionic model on the graphs. The Dirac operator of the model consists of deformed incidence matrices on the graph and the partition function is given by the inverse of the graph zeta function. We find that the…

High Energy Physics - Theory · Physics 2025-04-25 So Matsuura , Kazutoshi Ohta

The calculation of two- and four-particle observables is addressed within the framework of the truncated polynomial expansion method (TPEM). The TPEM replaces the exact diagonalization of the one-electron sector in models for fermions…

Strongly Correlated Electrons · Physics 2009-11-11 G. Alvarez , T. C. Schulthess