We study 2d (0,2) quiver gauge theories on the world-volume of
D1-branes probing singular toric Calabi-Yau 4-folds. The gauge
theories for arbitrary toric singularities are constructed by means
of partial resolution. Each gauge theory is expected to...
Quantum mechanics is distinguished by three essential features: the
Hugeness of Hilbert Space, I.e., the capacity for exponential
complexity; the phenomenon of Entanglement; and the duality between
Wave Function Collapse and Everett's
Quantum mechanics is distinguished by three essential features:
the Hugeness of Hilbert Space, I.e., the capacity for exponential
complexity; the phenomenon of Entanglement; and the duality between
Wave Function Collapse and Everett's Relative...
In this discussion I will present the background to the
integration-by-parts (IBP) machinery as used for Feynman integrals,
and its applications. I will also discuss recent work linking IBP
to some aspects of the algebraic geometry underlying...
I will define the hemisphere partition function for B-brane
boundary conditions in GLSMs and describe some applications to
B-brane transport on spacial classes of (non-) abelian GLSMs.
This discussion will focus on the question of how locality on
distance scales smaller than the AdS radius can emerge from a CFT.
We will introduce Landau singularities as a sign of locality in
QFT, and discuss the extent to which they are present...
A supersymmetric sector of N=(0,2) theories in two dimensions
defined by taking the cohomology of one of the supercharges is
known to carry the structure of a chiral algebra. I will talk about
some general and more concrete properties of such...
I'll start reviewing some aspects of my paper with K. Hori [1]
about localization of Gauged Linear Sigma Models (GLSM) on a
disc/hemisphere. The focus is on a special class of boundary
conditions corresponding to B-branes. I'll then review the...
