14 papers
Product Groups, Discrete Symmetries, and Grand Unification
Yael Shadmi
We present GUT models based on an GUT group. These models maintain the main successes of simple-group GUTs but permit simple solutions to the doublet-triplet sp…
Dark Matter and Dark Energy: A Physicist's Perspective
Michael Dine
For physicists, recent developments in astrophysics and cosmology present exciting challenges. We are conducting "experiments" in energy regimes some of which will be probed by acc…
TASI Lectures on The Strong CP Problem
Michael Dine
These lectures discuss the parameter of QCD. After an introduction to anomalies in four and two dimensions, the parameter is introduced. That such topological parameters can ha…
The Utility of Quantum Field Theory
Michael Dine
This talk surveys a broad range of applications of quantum field theory, as well as some recent developments. The stress is on the notion of effective field theories. Topics includ…
Possible Scales of New Physics
Michael Dine
The biggest question in beyond the standard model physics is what are the scales of new physics. Ideas about scales, as well as experimental evidence and constraints, are surveyed…
Tree Level Supergravity and the Matrix Model
Michael Dine, Robert Echols, Joshua P. Gray
It has recently been shown that the Matrix model and supergravity give the same predictions for three graviton scattering. This contradicts an earlier claim in the literature (hep-…