On the relation between 4d N=2 theories and 2d Liouville CFT: Partition functions and observables

• Nadav Drukker

Room: Lindstedtsvägen 3, room E2

Uniquess of Black Hole Space-Times

• Jay Armas

Room: Lindstedtsvägen 3, room E2 The talk will be based on the preprint: http://arxiv.org/abs/0911.4654

Canonical quantization of non-linear sigma models

• Johan Källén

Room: Lindstedtsvägen 3, room E2 I will introduce the "Chiral de Rham complex" and discuss its interpretation as the formal Hamiltonian quantization of the supersymmetric non-linear sigma model.

Chiral de Rham complex on special holonomy manifolds

• Joel Ekstrand

Room: Lindstedtsvägen 3, room E2

New results in target space geometry of non-linear sigma models

• Malin Göteman

Room: Lindstedtsvägen 3, room E2 Recent work on N=(2,2) non-linear sigma models with only semi-chiral fields will be discussed. Imposing additional N=(4,4) supersymmetry gives constraints on the target space geometry which we analyze. This is done both in the special case of linear transformations and 4-dimensional target space, as well as in the general case.

F-theory phenomenology

• Radu Tatar

Room: Lindstedtsvägen 3, room E2

Applications of AdS/CFT

• David Tong

Room: Lindstedtsvägen 3, room E2

F-theory phenomenology

• Radu Tatar

Room: Lindstedtsvägen 3, room E2

On the relation between 4d N=2 theories and 2d Liouville CFT: Partition functions and observables

• Nadav Drukker

Room: Lindstedtsvägen 3, room E2

Perturbative computations in gauge theories with gravity duals

• Christoph Sieg

Room: Lindstedtsvägen 3, room E2 I will review the recent progress to test AdS/CFT and integrability by explicit Feynman diagram computations of the spectra

On thermodynamics of N=6 superconformal Chern-Simons theory

• Mikael Smedbäck

Room: Lindstedtsvägen 3, room E2 Recently, great progress has been made on understanding the field theory side of the AdS(4)/CFT(3) duality. The so-called ABJM theory, which is an N=6 superconformal Chern-Simons theory, has been conjectured to describe the world-volume theory on an arbitrary number of M2-branes. We discuss thermal properties of ABJM theory, by computing quantum corrections to the free energy. We find that in weakly coupled ABJM theory on R(2) × S(1), the leading correction is non-analytic in the ’t Hooft coupling. We derive a precise formula for the correction. The free energy can be expressed in terms of the scalar thermal mass, which is generated by screening effects. We show that this mass vanishes to 1-loop order. We then go on to 2-loop order where we find a finite and positive mass squared. Our results are consistent with the free energy being a monotonic function in the coupling constant which interpolates smoothly to the intriguing N^(3/2) behaviour at strong coupling, where the entropy is strongly suppressed.

Beyond the planar limit

• Pawel Caputa

Room: Lindstedtsvägen 3, room E2

Applications of AdS/CFT

• David Tong

Room: Lindstedtsvägen 3, room E2

De Sitter in N=4 compactifications

• Giuseppe Dibitetto

Room: Lindstedtsvägen 3, room E2

General Semi-Direct Gauge Mediation

• Gabriele Ferretti

Room: Lindstedtsvägen 3, room E2 From 0912.0743: We give a general formulation of semi-direct gauge mediation of supersymmetry breaking where the messengers interact with the hidden sector only through a weakly gauged group. Using this general formulation, we provide an explicit proof that the MSSM gaugino masses are vanishing to leading order in the gauge couplings. On the other hand, the MSSM sfermion masses have, generically, a non-vanishing leading contribution. We discuss how such a mechanism can successfully be combined with other mediation schemes which give tachyonic sfermions, such as sequestered anomaly mediation and some direct gauge mediation models.

F-theory phenomenology

• Radu Tatar

Room: Lindstedtsvägen 3, room E2

Applications of AdS/CFT

• David Tong

Room: Lindstedtsvägen 3, room E2

On the relation between 4d N=2 theories and 2d Liouville CFT: Partition functions and observables

• Nadav Drukker

Room: Lindstedtsvägen 3, room E2

Bibranes: Target space geometry for worldsheet defects

• Christoph Schweigert

Room: Lindstedtsvägen 3, room E2

The Perfect Atom: Bound States of Super-QED

• Thomas Klose

Room: Lindstedtsvägen 3, room E2 We derive the spectrum of supersymmetric hydrogen-like atoms. A difference between these perfect atoms and non-supersymmetric ones is the absence of hyperfine structure. This is in accordance with strong coupling results using AdS/CFT

A supersymmetric action for D=11 supergravity

• Martin Cederwall

Room: Lindstedtsvägen 3, room E2