activity
20102025
most citedIntegrable systems from the classical reflection equation

27 citations · 79 across the 14 of their papers we have counts for

collaborators

18 papers

math.QA2025

Quantum as a locally compact quantum group

K. De Commer, G. Schrader, A. Shapiro +1

We construct the first examples of purely continuous, -deformed Lie type locally compact quantum groups in higher rank. They arise from Drinfeld-Jimbo quantization, at unimodula…

math.QA2025

The algebraic modular functor conjecture in type quantum Teichmüller theory

Gus Schrader, Alexander Shapiro

Fock and Goncharov introduced a quantization of higher Teichmüller theory using cluster Poisson varieties and their noncommutative deformations, associating to a complex semisimple…

math.RT2024

Cluster structure on genus 2 spherical DAHA: seven-colored flower

Semeon Arthamonov, Leonid Chekhov, Philippe Di Francesco +4

We construct an embedding of the Arthamonov-Shakirov algebra of genus 2 knot operators into the quantized coordinate ring of the cluster Poisson variety of exceptional finite mutat…

math-ph2024

Ruijsenaars wavefunctions as modular group matrix coefficients

Philippe Di Francesco, Rinat Kedem, Sergey Khoroshkin +2

We give a description of the Hallnäs--Ruijsenaars eigenfunctions of the 2-particle hyperbolic Ruijsenaars system as matrix coefficients for the order 4 element $S\in SL(2,\mathbb{Z…

math.SG2023

Skeins, clusters and wavefunctions

Mingyuan Hu, Gus Schrader, Eric Zaslow

In previous work of the second- and third-named authors with Linhui Shen, cluster theory was used to construct wavefunctions for branes in threespace and conjecturally relate them…

math.RT2023

The Chromatic Lagrangian: Wavefunctions and Open Gromov-Witten Conjectures

Gus Schrader, Linhui Shen, Eric Zaslow

Inside a symplectic leaf of the cluster Poisson variety of Borel-decorated local systems on a punctured surface is an isotropic subvariety we will call the chromatic Lagran…

math.QA2021★ 3 cited

Quantum decorated character stacks

David Jordan, Ian Le, Gus Schrader +1

We initiate the study of decorated character stacks and their quantizations using the framework of stratified factorization homology. We thereby extend the construction by Fock and…

math.QA2019★ 1 cited

-theoretic Coulomb branches of quiver gauge theories and cluster varieties

Gus Schrader, Alexander Shapiro

For a quiver without 1-cycles, we show that the Braverman--Finkelberg--Najakima quantized -theoretic Coulomb branch algebra of the corresponding quiver gauge…

math-ph2018★ 9 cited

On -Whittaker functions

Gus Schrader, Alexander Shapiro

The -Whittaker functions are eigenfunctions of the modular -deformed open Toda system introduced by Kharchev, Lebedev, and Semenov-Tian-Shansky. Using the q…

math-ph2018

Superintegrability of Generalized Toda Models on Symmetric Spaces

Nicolai Reshetikhin, Gus Schrader

In this paper we prove superintegrability of Hamiltonian systems generated by functions on , restriced to a symplectic leaf of the Poisson variety , where …

math.RT2017★ 19 cited

Continuous tensor categories from quantum groups I: algebraic aspects

Gus Schrader, Alexander Shapiro

We describe the algebraic ingredients of a proof of the conjecture of Frenkel and Ip that the category of positive representations of the quantum group $U_q(\mathfr…

math.QA2016★ 3 cited

A cluster realization of from quantum character varieties

Gus Schrader, Alexander Shapiro

We construct an injective algebra homomorphism of the quantum group into a quantum cluster algebra associated to the moduli space of frame…

math.QA2015

Dual pairs of quantum moment maps and doubles of Hopf algebras

Gus Schrader, Alexander Shapiro

For any finite-dimensional Hopf algebra there exists a natural associative algebra homomorphism between its Drinfeld double and its Heisenberg double $H(…

math.QA2015

Quantum groups, quantum tori, and the Grothendieck-Springer resolution

Gus Schrader, Alexander Shapiro

We construct an algebra embedding of the quantum group into the quantum coordinate ring of the reduced big double Bruhat cell in…

math-ph2014★ 1 cited

Algebraic integrability of the classical XXZ spin chain with reflecting boundary conditions

Gus Schrader

In this paper we analyze the classical XXZ spin chain with reflecting boundaries. We exhibit a system of log-canonical coordinates on the phase space generalizing Sklyanin's separa…

math-ph2014★ 27 cited

Integrable systems from the classical reflection equation

Gus Schrader

We construct integrable Hamiltonian systems on , where is a quasitriangular Poisson Lie group and is a Lie subgroup arising as the fixed point set of a group automorph…

math.AG2012★ 12 cited

The Universal Kummer Threefold

Qingchun Ren, Steven V Sam, Gus Schrader +1

The universal Kummer threefold is a 9-dimensional variety that represents the total space of the 6-dimensional family of Kummer threefolds in 7-dimensional projective space. We com…

math-ph2010★ 4 cited

XXZ scalar products, Miwa variables and discrete KP

O. Foda, G. Schrader

We revisit the quantum/classical integrable model correspondence in the context of inhomogeneous finite length XXZ spin-1/2 chains with periodic boundary conditions and show that t…