Pedagogical Lecture: Conformal Field Theory Applications in String Phenomenology

• Bert Schellekens (NIKHEF)

Organizational meeting

Monopoles, Lattices, and Holography

• David Tong

General Gauge Mediation and SUSY Phenomenology

• Valentin Khoze

Reception

Pedagogical Lecture: Conformal Field Theory Applications in String Phenomenology

• Bert Schellekens (NIKHEF)

ATLAS and Metastable Heavy Particles

• Sten Hellman (Fysikum)

Discussion

Grill Party

The Power of Modular Invariance

• Carlo Angelantonj

Discussion

Pedagogical Lecture: Instanton Calculations in String Phenomenology

• Alberto Lerda (Torino)

D-Instanton Effects From Particle Loops

• Christoffer Petersson

Discussion

Pedagogical Lecture: Instanton Calculations in String Phenomenology

• Alberto Lerda (Torino)

Holographic Non-perturbative Couplings

• Marialuisa Frau

Discussion

String Phenomenology for the LHC

• Brent Nelson

This talk will discuss the connection between string phenomenology, model building and LHC measurements. Topics will be strictly limited to those in which predictions for actual LHC observables are made. We will survey in a brief fashion direct string production at the LHC, anomalous vector boson couplings, new exotic states, quasi-stable supersymmetric particles and MSSM models with non-universal supersymmetry breaking. Topics will be drawn from intersecting brane constructions, F-theory, and orbifold compactifications of heterotic string theory.

Organizational meeting

The LARGE Volume Scenario

• Joseph Conlon

I give an overview of the LARGE volume scenario. The focus is on more recent developments involving supersymmetry breaking, sequestering and the structure of soft terms. I describe the current status of the scenario and the main open problems within it.

Discussion

Pedagogical Lecture: Advanced Topics in Inflation

• Daniel Baumann

Akrami PhD defense

Discussion

One-loop Adjoint Masses for Non-Supersymmetric Intersecting Branes

• Pascal Anastasopoulos (Vienna)

I am planning to give a solid introduction on 1-loop adjoint masses in intersecting D-brane worlds. I will mainly focus on models with broken supersymmetry in intersecting D-brane configurations by slight deviation of the angles from their supersymmetric values. This was discussed in our recent paper 1105.0591 [hep-th] with Antoniadis, Benakli, Goodsell, Vichi. In the open string channel, the string two-point function receives contributions only from the infrared and the ultraviolet limits. The latter is due to tree-level closed string uncanceled NS-NS tadpoles, which we explicitly reproduce from the effective Born-Infeld action. On the other hand, the infrared region reproduces the 1-loop mediation of supersymmetry breaking in the effective gauge theory, via messengers and their Kaluza-Klein excitations. In the toroidal set-up considered here, it receives contributions only from N ~ 4 and N ~ 2 supersymmetric configurations, and thus always leads at leading order to a tachyonic direction, in agreement with effective field theory expectations.

Reception

Pedagogical Lecture: Dark Matter Calculations

• Joakim Edsjö (OKC)

Theory colloquium

• Bert Schellekens (NIKHEF)

Goldstino Couplings to Matter

• Emilian Dudas

We discuss the low-energy effective action of a light goldstino coupled to SM fields by using a manifestly supersymmetric formalism, in which the goldstino and the matter fields are represented as constrained superfields. We discuss the UV sensitivity of the constraints and work out non-universal goldstino couplings to matter. The latter are important when the heavy superpartner masses are of the order of the supersymmetry breaking scale.

Discussion

Island Dinner

Pedagogical Lecture: Advanced Topics in Inflation

• Daniel Baumann (DAMTP)

Inflation from Axion Monodromy

• Enrico Pajer

Discussion

TBA

• Gianfranco Pradisi (Rome Tor Vergata)

Discussion

Pedagogical Lecture: Dynamical SUSY Breaking

• Zohar Komargodski

Organizational meeting

Mass Hierarchies in String Theory and Holography

• Ignatios Antoniadis (CERN)

Discussion

Reception

Pedagogical Lecture: Gauge Mediation

• David Shih

RR Photons

• Pablo Camara (CERN)

Type II string compactifications to 4d generically contain massless Ramond-Ramond U(1) gauge symmetries. I will discuss in detail different avenues by which U(1)_RR bosons may mix with D-brane U(1)'s. The focus will be mostly on Type IIA orientifolds and their M-theory lift, although phenomenological consequences in the context of hypercharge gauge coupling unification in F-theory SU(5) GUT's will also be discussed.

Discussion

Discussion

Search for TeV Scale R-Parity Conserving Supersymmetry with ATLAS

• Christophe Clément

The ATLAS experiment at LHC has already collected many hundreds of inverse picobarns of proton-proton collisions at sqrt(s)=7 TeV. Supersymmetry (SUSY) production at LHC is dominated by gluino and squark production. In the scenario of R-parity conservation, the lightest supersymmetric particle (LSP) is stable and can constitute a plausible dark matter candidate. Strong SUSY production at LHC has an experimental signature characterized by multiple jets, leptons and last but not the least, missing transverse energy due to the LSPs escaping the experiment undetected. The latest results of search for strong SUSY production in this scenario using the ATLAS data are presented and discussed.

Discussion

Grill Party

Pedagogical Lecture: Grand Unified Theories from String Theory

• Hans-Peter Nilles (Bonn)

Yukawas in F-theory

• Fernando Marchesano (Madrid, IFT)

I will review the results of the papers 0910.5496 and 1104.2609, that deal with the computation of Yukawa couplings in local GUT F-theory models and with how non-perturbative effects can solve the 'rank-one' problem of these models.

Discussion

Pedagogical Lecture: Grand Unified Theories from String Theory

• Hans-Peter Nilles (Bonn)

Tunneling in the Landscape: an Experimental Test

• Henry Tye (IAS Hong Kong)

I shall review tunneling in scalar quantum field theory and propose an experimental test of the idea of resonant tunneling.

Discussion

Organizational meeting (for everyone)

Gaugino Masses and Semi-Direct Gauge Mediation

• Riccardo Argurio (Brussels)

Discussion

Reception

A Natural Universe Made by a Composite Higgs, Dark Matter and Inflaton

• Francesco Sannino (CP3-Origins)

The bulk of the visible component of the universe is constituted by protons and neutrons which are composite particles. It is therefore natural to ask if the missing ingredients such as the Higgs, dark matter particles and inflation can also be composite. We will present the state-of-the-art of this ambitious program.

Light Higgsinos as Heralds of Higher-Dimensional Unification

• Wilfried Buchmüller (DESY)

Discussion

De Sitter Solutions at Tree-Level

• Paul Koerber (KU Leuven)

De Sitter solutions play an important role in cosmology and the construction of realistic vacua. They seem however notoriously difficult to construct in string theory or supergravity. I'll talk about the search for de Sitter solutions in classical supergravity and discuss a relatively simple example in more detail. I'll review the advantages and drawbacks of this approach.

Discussion

Island Dinner We will take bus 43 at 16.14 to Räntmästartrappan in Old Town (Gamla Stan), and from there the boat Fjäderholmslinjen leaving at 17.00. It costs 110 SEK -- cash only. It is a round trip ticket so remember to keep the ticket! The boat ride takes 25 minutes. The restaurant is Fjäderholmarnas Krog and on the menu is (naturally) fish, with a vegetarian option. We can take the boat back together at 19.30, or you can stay another hour and walk around the island if you prefer.

Non-perturbative Effects in Type IIB and F-Theory

• Mirjam Cvetic (Pennsylvania)

We address issues of systematic studies of non-perturbative effects in string theory due to string instantons by focusing on Type IIB and F-theory. We point out that the computability of such effects results in systems of diophantine equations, thus reducing to Hilbert's 10th problem. We also address instanton zero modes and non-perturbative superpotential calculations directly in F-theory by employing techniques of anomaly inflow, string junction technology, and insights from the heterotic-F-theory duality.

Discussion

Discussion