Theory Seminar (High Energy/Cosmology)

<< Summer 2018 Fall 2018 Spring 2019 >>
Subscribe your calendar or receive email announcements of events

Events During the Week of November 25th through December 1st, 2018

Monday, November 26th, 2018

No events scheduled

Tuesday, November 27th, 2018

No events scheduled

Wednesday, November 28th, 2018

No events scheduled

Thursday, November 29th, 2018

No events scheduled

Friday, November 30th, 2018

Topological Data Analysis for Cosmology and String Theory
Time: 2:00 pm - 3:25 pm
Place: 5280 Chamberlin Hall
Speaker: Alex Cole, University of Wisconsin-Madison
Abstract: Persistent homology, the main technique underlying the field of Topological Data Analysis, computes the multiscale topology of a data set by using a sequence of discrete complexes. Roughly speaking, persistent homology allows us to compute the “shape” of data. In this talk I will introduce persistent homology and describe applications to data sets in cosmology and string theory. I will demonstrate how persistence diagrams provide an improved real-space observable for the Cosmic Microwave Background. In particular, persistence diagrams are more sensitive to local non-Gaussianity on a set of simulated temperature maps than Betti numbers, which are in turn more sensitive than the genus. I will also use persistent homology to characterize distributions of Type IIB flux vacua and as a framework for understanding the correlation of different low-energy features in moduli space.
Add this event to your calendar