(2023-12-12) Seminar: Mikhail Alfimov -- On beta-function of N=2 supersymmetric integrable sigma models


Mikhail Alfimov  副教授学术报告

Title: On beta-function of N=2 supersymmetric integrable sigma models

Speaker: Mikhail Alfimov

Affiliation: National Research University Higher School of Economics, Russia (俄罗斯国家研究型高等经济大学)

Time: 16:00-17:00, Tuesday, 12th December, 2023 (UTC+8, Beijing Time)

Venue: Zoom Meeting (ID: 385 442 0225; Passcode: yauc)

Inviter: Yunfeng Jiang(江云峰)


We study regularization scheme dependence of Kaehler (N=2) supersymmetric sigma models. At the one-loop order the metric beta-function is the same as in non-supersymmetric case and coincides with the Ricci tensor. First correction in the MS scheme is known to appear at the fourth loop (Grisaru et al., 1986). We show that for certain integrable Kaehler backgrounds, such as complete T-dual of eta-deformed CP(n) sigma models, there is a scheme in which the fourth loop contribution vanishes.


Dr. Mikhail Alfimov is currently Associate Professor at the Faculty of Mathematics of HSE University and the Lebedev Physical Institute of the Russian Academy of Sciences. He was a research fellow at the Institut de Physique Théorique CEA Saclay, France from 2013 to 2016 and received his Ph.D. from École Normale Supérieure de Paris in 2018.

His research interests include supersymmetric gauge theory, conformal field theory, integrability, instanton calculus, AGT correspondence and BFKL physics.


The seminar will be broadcasted online by Zoom.

Interested people are free to join, without registration in advance.

The Zoom info is


Meeting ID: 385 442 0225

Passcode: yauc