Found 8 result(s)

### 12.10.2021 (Tuesday)

#### Quantum algebras in supersymmetric gauge theories: interfaces and stable envelopes

Regular Seminar Nikita 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)

#### Lefschetz thimbles in sigma models

Journal Club Nikita 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)

#### Gauge theory and Painleve VI

Exceptional Seminar Nikita Nekrasov (IHES and Simons Center)

 at: 14:00 ICroom H503 abstract:

### 21.05.2013 (Tuesday)

#### BPS/CFT correspondence and Quantum hydrodynamics

Regular Seminar Nikita 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

### 27.09.2012 (Thursday)

#### Seiberg-Witten geometry of N=2 quiver theories, and quantization

Exceptional Seminar Nikita Nekrasov (IHES)

 at: 11:30 ICroom B539 abstract:

### 21.06.2012 (Thursday)

#### The index of M-theory (Part 2)

Regular Seminar Nikita Nekrasov (IHES)

 at: 14:00 ICroom B539 abstract:

### 20.06.2012 (Wednesday)

#### The index of M-theory (Part 1)

Regular Seminar Nikita Nekrasov (IHES)

 at: 14:00 ICroom H503 abstract:

### 09.04.2008 (Wednesday)

#### Topological strings in two dimensions and gauge theory

Regular Seminar Nikita Nekrasov (IHES)

 at: 15:00 ICroom IMS lecture hall abstract: First of two lectures. For details, please consult the webpage www.ma.ic.ac.uk (slash) (tilde) rpwt (slash) LMS.html (sorry, triangle server does not allow special characters)