ReportofContributions The25thNordicNetworkMeetingon”Strings,FieldsandBranes”

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The 25th Nordic Network Meeting on ”Strings, Fields

and Branes”

Report of Contributions

https://indico.fysik.su.se/e/1826

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The 25th Nordic … / Report of Contributions On the relation between 4d N=2 t …

Contribution ID: 250 Type: not specified

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

Thursday, 25 March 2010 13:00 (1 hour)

Presenter:

DRUKKER, Nadav

March 19, 2023 Page 1

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The 25th Nordic … / Report of Contributions Uniquess of Black Hole Space-Times

Uniquess of Black Hole Space-Times

Thursday, 25 March 2010 14:00 (20 minutes)

The talk will be based on the preprint:

http://arxiv.org/abs/0911.4654

Presenter:

ARMAS, Jay

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The 25th Nordic … / Report of Contributions Canonical quantization of non- …

Canonical quantization of non-linear sigma models

I will introduce the “Chiral de Rham complex” and discuss its interpretation as the formal Hamiltonian quantization of the supersymmetric non-linear sigma model.

Presenter:

KÄLLÉN, Johan

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The 25th Nordic … / Report of Contributions New results in target space geom …

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

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.

Presenter:

GÖTEMAN, Malin

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The 25th Nordic … / Report of Contributions Chiral de Rham complex on special …

Chiral de Rham complex on special holonomy manifolds

Presenter:

EKSTRAND, Joel

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The 25th Nordic … / Report of Contributions F-theory phenomenology

F-theory phenomenology

Presenter:

TATAR, Radu

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The 25th Nordic … / Report of Contributions Applications of AdS/CFT

Applications of AdS/CFT

Presenter:

TONG, David

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F-theory phenomenology

Friday, 26 March 2010 09:30 (1 hour)

Presenter:

TATAR, Radu

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

Presenter:

DRUKKER, Nadav

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The 25th Nordic … / Report of Contributions Perturbative computations in gau …

Perturbative computations in gauge theories with gravity duals

Friday, 26 March 2010 12:00 (20 minutes)

I will review the recent progress to test AdS/CFT and integrability by explicit Feynman diagram computations of the spectra

Presenter:

SIEG, Christoph

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The 25th Nordic … / Report of Contributions On thermodynamics of N=6 super …

On thermodynamics of N=6 superconformal Chern-Simons theory

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 Nˆ(3/2) behaviour at strong coupling, where the entropy is strongly suppressed.

Presenter:

SMEDBÄCK, Mikael

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The 25th Nordic … / Report of Contributions Beyond the planar limit

Beyond the planar limit

Presenter:

CAPUTA, Pawel

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Applications of AdS/CFT

Presenter:

TONG, David

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The 25th Nordic … / Report of Contributions De Sitter in N=4 compactifications

De Sitter in N=4 compactifications

Presenter:

DIBITETTO, Giuseppe

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The 25th Nordic … / Report of Contributions General Semi-Direct Gauge Media …

General Semi-Direct Gauge Mediation

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.

Presenter:

FERRETTI, Gabriele

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F-theory phenomenology

Presenter:

TATAR, Radu

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Applications of AdS/CFT

Saturday, 27 March 2010 09:30 (1 hour)

Presenter:

TONG, David

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

Saturday, 27 March 2010 10:30 (1 hour)

Presenter:

DRUKKER, Nadav

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The 25th Nordic … / Report of Contributions Bibranes: Target space geometry f …

Bibranes: Target space geometry for worldsheet defects

Saturday, 27 March 2010 12:00 (20 minutes)

Presenter:

SCHWEIGERT, Christoph

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The 25th Nordic … / Report of Contributions The Perfect Atom: Bound States of …

The Perfect Atom: Bound States of Super-QED

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

Presenter:

KLOSE, Thomas

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The 25th Nordic … / Report of Contributions A supersymmetric action for D=11 …

A supersymmetric action for D=11 supergravity

Presenter:

CEDERWALL, Martin