Found 5 result(s)

### 03.06.2020 (Wednesday)

#### SphericalBranes,SupersymmetricLocalization,andHolography

Regular Seminar Nikolay au:Bobev'><span class='hl'>Nikolay</span> Bobev (KUL Leuven)

 at: 14:00 ICroom Zoom abstract: I will describe a class of supergravity solutions holographically dual to d-dimensional maximally supersymmetric SYM on S^d. Supersymmetric localization can be employed to calculate the partition function and the VEV of a 1/2-BPS Wilson lines in the planar limit of the SYM theory. I will present the results of this calculation and will show how they lead to a non-trivial precision test of holography in the context of non-conformal QFTs and space-times that are non asymptotically locally AdS.

### 12.12.2018 (Wednesday)

#### AnEtudeon3dN=2ConformalManifolds

Regular Seminar Nikolay au:Bobev'><span class='hl'>Nikolay</span> Bobev ( KU Leuven)

 at: 13:15 KCLroom S2.49 abstract: I will describe the one-dimensional complex conformal manifold that controls the infrared dynamics of a three-dimensional N=2 supersymmetric theory of three chiral superfields with a cubic superpotential. Two special points on this conformal manifold are the XYZ model and three decoupled copies of the critical Wess-Zumino model. The conformal manifold enjoys a discrete duality group and can be thought of as an orbifold of CP^1. I will discuss how to compute the spectrum of low lying operators and their OPE coefficients as a function of the coordinate on the conformal manifold using the epsilon-expansion and the numerical conformal bootstrap.

### 08.11.2017 (Wednesday)

#### RGFlowsAcrossDimensionsandHolography

Regular Seminar Nikolay au:Bobev'><span class='hl'>Nikolay</span> Bobev (KU Leuven)

 at: 14:00 ICroom H503 abstract: Superconformal field theories placed in nontrivial background fields for the metric and the continuous global symmetries exhibit a rich web of RG flows across dimensions. I will discuss several examples of such flows and emphasize some of their universal features. In addition, I will employ non-perturbative tools such as 't Hooft anomaly matching, a-, F-, and c-extremization, and holography to gain a quantitative understanding of some aspects of these theories. Finally, I will discuss the relevance of these results for a microscopic understanding of the entropy of supersymmetric black holes and strings in AdS.