Speaker: Christopher Mauger
Affiliation: Los Alamos National Lab
Host: Svoboda
Title:The Long-Baseline Neutrino Program and the CAPTAIN Project
Abstract: The international neutrino community is developing a long-baseline
neutrino program based in the United States with a high-intensity
neutrino source and suite of near detectors at Fermilab, and a large
liquid argon time-projection chamber (TPC) in the Sanford Underground
Research Facility. This exciting program will determine the neutrino mass
ordering, search for leptonic CP violation, and over-constrain the leptonic
mixing matrix. The large underground detector enables a great deal more
physics such as searches for beyond-the-standard-model nucleon decay
and measurements of supernova neutrinos. In order to maximize its
potential, several challenges must be overcome. I will discuss the
program, the challenges, and how the Cryogenic Apparatus for Precision
Tests of Argon Interactions with Neutrinos (CAPTAIN) project addresses
the challenges.
User:
High-Energy Seminars
Time:
6:10am-7:10am
Send Reminder:
Yes - 3 days 4 hour 0 minutes before start
Description:
Joint Theory Seminar
Speaker: Jonathan Heckman
Title: Effective Field Theories From String Compactification
Host: Luty
Room: 432
Abstract: Though often viewed as a tool in the study of quantum gravity, one of the surprising outcomes from recent work in string theory is the wealth of insights it generates in the construction and study of low energy effective quantum field theories decoupled from gravity. In this talk we illustrate these points by focusing on the special case of six-dimensional superconformal field theories, a particularly interesting class of quantum field theories in which the constituent degrees of freedom are tensionless strings rather than particles. Using a strongly coupled phase of string theory known as F-theory, we show how to generate 6D SCFTs from the geometry of elliptically fibered Calabi-Yau threefolds -- the extra dimensions of F-theory. We then explain how these geometric considerations allow us to classify possibly all 6D SCFTs. Quite surprisingly, these theories all have a rather simple universal structure which is conveniently captured by generalized quiver diagrams in which there is a single line of quiver nodes. We also discuss how these results fit in the broader context of string compactification.
