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We classify the irreducible unitary modules in category O for the rational Cherednik algebras of type G(r,1,n) and give explicit combinatorial formulas for their graded characters. More precisely, we produce a combinatorial algorithm…

Representation Theory · Mathematics 2017-11-29 Stephen Griffeth

We study rational Cherednik algebras over an algebraically closed field of positive characteristic. We first prove several general results about category O, and then focus on rational Cherednik algebras associated to the general and special…

Representation Theory · Mathematics 2021-02-26 Martina Balagovic , Harrison Chen

We consider representations of rational Cherednik algebras which are particular ideals in the ring of polynomials. We investigate convergence of the integrals which express the Gaussian inner product on these representations. We derive that…

Representation Theory · Mathematics 2012-01-31 Misha Feigin , Constantin Shramov

We compare crystal combinatorics of the level $2$ Fock space with the classification of unitary representations of type $B$ rational Cherednik algebras to show that any finite-dimensional unitary irreducible representation of such an…

Representation Theory · Mathematics 2019-08-27 Emily Norton

We study lowest weight representations of the rational Cherednik algebra attached to a complex reflection group W. In particular, we generalize a number of previous results due to Berest, Etingof and Ginzburg.

Representation Theory · Mathematics 2007-05-23 Tatyana Chmutova , Pavel Etingof

We study lowest-weight irreducible representations of rational Cherednik algebras attached to the complex reflection groups G(m,r,n) in characteristic p. Our approach is mostly from the perspective of commutative algebra. By studying the…

Representation Theory · Mathematics 2015-01-08 Sheela Devadas , Steven V Sam

We compare crystal combinatorics of the level 2 Fock space with the classification of unitary irreducible representations of type B rational Cherednik algebras to study how unitarity behaves under parabolic restriction. First, we show that…

Representation Theory · Mathematics 2020-08-13 Emily Norton

We begin a systematic study of unitary representations of minimal $W$-algebras. In particular, we classify unitary minimal $W$-algebras and make substantial progress in classification of their unitary irreducible highest weight modules. We…

Representation Theory · Mathematics 2023-07-03 Victor G. Kac , Pierluigi Möseneder Frajria , Paolo Papi

We obtain several results about representations of rational Cherednik algebras, and discuss their applications. Our first result is the Cohen-Macaulayness property (as modules over the polynomial ring) of Cherednik algebra modules with…

Representation Theory · Mathematics 2015-03-30 Pavel Etingof , Eugene Gorsky , Ivan Losev

We prove unitarity of the vacuum representation of the $\mathcal{W}_3$-algebra for all values of the central charge $c\geq 2$. We do it by modifying the free field realization of Fateev and Zamolodchikov resulting in a representation which,…

Representation Theory · Mathematics 2023-05-16 Sebastiano Carpi , Yoh Tanimoto , Mihály Weiner

We introduce parabolic degenerations of rational Cherednik algebras of complex reflection groups, and use them to give necessary conditions for finite-dimensionality of an irreducible lowest weight module for the rational Cherednik algebra…

Representation Theory · Mathematics 2015-03-02 Stephen Griffeth , Armin Gusenbauer , Daniel Juteau , Martina Lanini

We give an overview of the representation theory of restricted rational Cherednik algebras. These are certain finite-dimensional quotients of rational Cherednik algebras at t=0. Their representation theory is connected to the geometry of…

Representation Theory · Mathematics 2017-11-27 Ulrich Thiel

A complete classification and character formulas for finite-dimensional irreducible representations of the rational Cherednik algebra of type A is given. Less complete results for other types are obtained. Links to the geometry of affine…

Representation Theory · Mathematics 2007-05-23 Yuri Berest , Pavel Etingof , Victor Ginzburg

In this paper, we study representations of the rational Cherednik algebra associated to the complex reflection group $G_4$. In particular, we classify the irreducible finite dimensional representations and compute their characters.

Representation Theory · Mathematics 2016-07-13 Yi Sun

This paper surveys the representation theory of rational Cherednik algebras. We also discuss the representations of the spherical subalgebras. We describe in particular the results on category O. For type A, we explain relations with the…

Representation Theory · Mathematics 2007-05-23 Raphael Rouquier

The purpose of this article is to study the relationship between numerical invariants of certain subspace arrangements coming from reflection groups and numerical invariants arising in the representation theory of Cherednik algebras. For…

Representation Theory · Mathematics 2020-08-19 Stephen Griffeth

In this paper, we classify the irreducible representations of the rational Cherednik algebras of rank 1 in characteristic p > 0. There are two cases. One is the "quantum" case, where "Planck's constant" is nonzero and generic irreducible…

Representation Theory · Mathematics 2007-05-23 Frédéric Latour

In this survey article we review Kac-Moody and Heisenberg algebra actions on the categories $\mathcal{O}$ of the rational Cherednik algebras associated to groups $G(\ell,1,n)$. Using these actions we solve basic representation theoretic…

Representation Theory · Mathematics 2015-09-30 Ivan Losev

We study the representations of the W-algebra W(g) associated to an arbitrary finite-dimensional simple Lie algebra g via the quantized Drinfeld-Sokolov reductions. The characters of irreducible representations with non-degenerate highest…

Quantum Algebra · Mathematics 2007-05-23 Tomoyuki Arakawa

Using a combinatorial description due to Jacon and Lecouvey of the wall crossing bijections for cyclotomic rational Cherednik algebras, we show that the irreducible representations $L_c(\lambda^\pm)$ of the rational Cherednik algebra…

Representation Theory · Mathematics 2022-01-13 Seth Shelley-Abrahamson , Alec Sun
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