Publications (82)
Strong Coupling in F-theory and Geometrically Non-Higgsable Seven-branes
James Halverson
Geometrically non-Higgsable seven-branes carry gauge sectors that cannot be broken by complex structure deformation, and there is growing evidence that such configurations are typi…
TASI Lectures on Remnants from the String Landscape
James Halverson, Paul Langacker
Superstring theories are very promising theoretically, but the enormous landscape of string vacua and the (likely) very large underlying string scale imply that they may never be t…
Non-Higgsable QCD and the Standard Model Spectrum in F-theory
Antonella Grassi, James Halverson, Julius Shaneson +1
Many four-dimensional supersymmetric compactifications of F-theory contain gauge groups that cannot be spontaneously broken through geometric deformations. These "non-Higgsable clu…
On Axion Reheating in the String Landscape
James Halverson, Cody Long, Brent Nelson +1
We demonstrate that asymmetric reheating arises in a large ensemble of string compactifications with many axions and gauged dark sectors. This phenomenon may help avoid numerous co…
Small Vacuum Energy and Tunneling in a Modified Bousso-Polchinski Model
James Halverson, Justin Khoury, Cody Long
We propose a simplified model for the cosmological constant in string theory flux vacua motivated by type IIB and F-theory compactifications. Relative to the Bousso-Polchinski mode…
Statistical Predictions in String Theory and Deep Generative Models
James Halverson, Cody Long
Generative models in deep learning allow for sampling probability distributions that approximate data distributions. We propose using generative models for making approximate stati…