Cornell University

B-Exam (LEPP Theory): John Stout, Cornell

Tuesday, June 20, 2017 at 9:00am

Physical Sciences Building, 401
245 East Avenue

Large Fields and Lattices

Abstract: Large-field inflation provides an experimentally observable signature of quantum gravity—primordial gravitational waves—but is notoriously difficult to realize consistently. These difficulties seem to point to deep insights about the structure of quantum gravity—for instance, the Weak Gravity Conjecture—so understanding if, and how, large-field inflation may be realized is extremely interesting. Currently, our best controlled models are those which attain these super-Planckian displacements via the collective motion of many aligned axions.

In this talk, I will present some recent work on how these models are constrained by demanding they satisfy the Weak Gravity Conjecture.

Advisor: Liam McAllister

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