### Conveners

#### Field and String Theory

- David Berenstein (University of California at Santa Barbara)
- Christopher Herzog (Stony Brook University)

#### Field and String Theory

- David Berenstein (University of California at Santa Barbara)
- Christopher Herzog (Stony Brook University)

Mr
Matteo Lotito
(University of Cincinnati)

8/7/15, 2:00 PM

Field and String Theory

We present a classification of 4d rank 1 $\mathcal{N}=2$ SCFTs, based on a geometrical analysis of the Coulomb Branches of these theories, i.e., their moduli space of vacua.
Supersymmetry and the residual $U(1)$ gauge symmetry on the Coulomb Branch allow us to determine some constraints on the geometries that can be consistently interpreted as low energy moduli space of a SCFT.
We can...

Cyril Closset

8/7/15, 2:25 PM

Field and String Theory

I will discuss a new exact formula for supersymmetric correlation functions of gauged linear sigma models (GLSM) with $\mathcal{N}=(2,2)$ supersymmetry on the two-sphere with a twist. More precisely, the $S^2$ supersymmetric background is an ``Omega-background'' which generalizes the familiar A-twist. The formula simplifies previous results and leads to new results for non-Abelian gauge...

christopher Winterowd
(University of Utah)

8/7/15, 2:50 PM

Field and String Theory

One of the most important developments in condensed matter physics in recent years has been the discovery
and characterization of graphene. A two-dimensional layer of Carbon arranged in a hexagonal lattice, graphene exhibits
many interesting electronic properties, most notably the property that the low energy excitations can be described by the Dirac equation for a massless fermion.
These...

Prof.
Roland Allen
(Texas A&M University)

8/7/15, 3:15 PM

Field and String Theory

In condensed matter physics, the theory of spin–charge separation dates back to the 1950 paper of Tomonaga [1], but experimental confirmation required almost a half century [2-4]. Here we consider the possibility of a similar phenomenon — inspired in part by the reality of Higgs bosons [5,6] and therefore of at least one Higgs condensate — which would potentially be observable in Run 2 of the...

Yongchao Lv

8/7/15, 4:00 PM

Field and String Theory

I will report on a systematic approach to the classification of four dimensional N=2 superconformal field theories (SCFTs) with a one dimensional moduli space of Coulomb vacua with planar topology. The geometric structure of the Coulomb branch encodes ultraviolet conformal field theory data: the relevant mass deformations of the UV N=2 SCFTs are mapped to the complex deformations of...

Mr
Martin Polacek
(PhD student)

8/7/15, 4:25 PM

Field and String Theory

We give the manifestly T-dual formulation of the massless sector of the classical 3D Type II superstring in off-shell 3D N = 2 superspace, including the action. It has a simple relation to the known superspace of 4D N = 1 supergravity in 4D M-theory via 5D F-theory. The prepotential appears as part of the vielbein, without derivatives.

Zaq Carson
(The Ohio State University)

8/7/15, 4:50 PM

Field and String Theory

The traditional picture of a black hole as a point-like singularity with no structure at the horizon is known to emit Hawking radiation in a non-unitary fashion. The fuzzball proposal attempts to resolve this dilemma by treating the black hole as a large bound string state with structure at the horizon and a "bubble of nothing" in the interior. There has been much success in matching the...

Michael Spillane
(Stony Brook University)

8/7/15, 5:15 PM

Field and String Theory

Interest in entanglement entropy and its generalization Renyi entropy is growing due to its applications in a variety of fields in physics, from quantum computation and phase transitions to black hole physics and holography. In this talk I will discuss the effects of a small finite temperature on both measures of entanglement. The primary focus will be on calculating corrections for a free...

Prof.
David Berenstein
(UCSB)

8/7/15, 5:40 PM

Field and String Theory

We construct various exact analytical solutions of the $SO(3)$ BMN matrix model that correspond to rotating fuzzy
spheres and rotating fuzzy tori. After an appropriate ansatz, we reduce the problem to solving a set of polynomial equations
in $2N$ real variables. These equations have a discrete set of solutions for each value of the angular momentum. We study the phase structure of the...