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Opening the Black Box of Neural Nets: Case Studies in Stop/top Discrimination
In this thesis we examine several different approaches for deducing observable signals of new physics. First, we outline a technique to extract useful information about the pattern a neural network has learned to recognize, ...
On Soft Theorems and Asymptotic Symmetries in Four Dimensions
It was recently discovered that soft theorems, Ward identities associated to asymptotic symmetries, and the memory effect in gravity and gauge theories are in fact mathematically equivalent. This is a rather remarkable ...
Aspects of Symmetry in Asymptotically Flat Spacetimes
We explore the nature and implications of a variety of asymptotic symmetry groups associated to gauge theory and quantum gravity in asymptotically flat spacetimes. We re-express Weinberg's soft graviton theorem as a Ward ...
Transport and Symmetry Breaking in Strongly Correlated Systems With Topological Order
This thesis is devoted to the study of strongly correlated phases of quantum matter in two spatial dimensions. In presence of strong interactions, the electron can split up into separate spin and charge degrees of freedom. ...
Universal non-local observables at quantum critical points
This dissertation is devoted to the study of universal observables in quantum critical systems, most of which have a non-local character. The overarching goal of this work is to compute new universal observables of critical ...
Precision Tunneling Rate Calculations in Quantum Field Theory and the Ultimate Fate of Our Universe
One of the most concrete implications of the discovery of the Higgs boson is that, in the absence of physics beyond the Standard Model, the long-term fate of our universe can now be established through precision calculations. ...