Found 8 result(s)

### 12.10.2021 (Tuesday)

#### Quantumalgebrasinsupersymmetricgaugetheories:interfacesandstableenvelopes

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

 at: 13:20 ICroom B630 abstract: 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)

#### Lefschetzthimblesinsigmamodels

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

 at: 15:15 Otherroom Zoom, instructions in abstract 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 integrability-london.weebly.com. The link will be emailed.

### 28.10.2013 (Monday)

#### GaugetheoryandPainleveVI

Exceptional Seminar Nikita au:Nekrasov'><span class='hl'>Nikita</span> Nekrasov (IHES and Simons Center)

 at: 14:00 ICroom H503 abstract:

### 21.05.2013 (Tuesday)

#### BPS/CFTcorrespondenceandQuantumhydrodynamics

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

 at: 13:30 ICroom B1004 abstract: 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