Found 8 result(s)

12.10.2021 (Tuesday)

2261' style='color:#f0ad4e'>

Quantum algebras in supersymmetric gauge theories: interfaces and stable envelopes

Regular Seminar Nikita au:Nekrasov'><span class='hl'>Nikita</span> Nekrasov (SCGP, Stony Brook and Center for Advanced Studies, Skoltech, Moscow)

13:20 IC
room B630

I will give an overview of a three decade long project of novel symmetries in quantum field theory, with the emphasis on the most recent development concerning the realisation of stable envelopes (proposed by A. Okounkov and collaborators) and R-matrices via supersymmetric interfaces in 1-2-3 dimensional supersymmetric gauge theories. Based on the recent paper arXiv:2109.10941 with Mykola Dedushenko.

11.03.2021 (Thursday)

2183' style='color:#f0ad4e'>

Lefschetz thimbles in sigma models

Journal Club Nikita au:Nekrasov'><span class='hl'>Nikita</span> Nekrasov (Stony Brook U., SCGP)

15:15 Other
room Zoom, instructions in abstract

Two dimensional sigma models describe (harmonic) maps of Riemann surfaces to Riemannian manifolds. I will present the motivations to study the complexification of this problem. I will present the novel approach, developed in my work with Igor Krichever, allowing to construct essentially all twisted complexified harmonic maps of two-torus to spheres and projective spaces. -- Part of the London Integrability Journal Club. If you are a new participant please register at The link will be emailed.

28.10.2013 (Monday)

21.05.2013 (Tuesday)

1205' style='color:#f0ad4e'>

BPS/CFT correspondence and Quantum hydrodynamics

Regular Seminar Nikita au:Nekrasov'><span class='hl'>Nikita</span> Nekrasov (IHES)

13:30 IC
room B1004

I will review the intermediate long wave equation which interpolates between the celebrated Korteweg-de Vries and Benjamin-Ono equations, describing the one-dimensional waves in a shallow and deep water, respectively. The quantum version of this equation is of some interest to the theory of quantum wires and other quasi-one dimensional condensed matter systems. I will explain the unexpected connection of this equation to the dynamics of gauge theories in two, four, and six dimensions. This connection is one of the applications of the BPS/CFT correspondence. Based on the work in progress with Andrei Okounkov

27.09.2012 (Thursday)

21.06.2012 (Thursday)

20.06.2012 (Wednesday)

09.04.2008 (Wednesday)

612' style='color:#f0ad4e'>

Topological strings in two dimensions and gauge theory

Regular Seminar Nikita au:Nekrasov'><span class='hl'>Nikita</span> Nekrasov (IHES)

15:00 IC
room IMS lecture hall

First of two lectures. For details, please consult the webpage (slash) (tilde) rpwt (slash) LMS.html (sorry, triangle server does not allow special characters)