Departmental Oral Examination (Thesis Title: "2+1d Quantum Field Theories in Large N limit")

Speaker: 
HAMID OMID
Event Date and Time: 
Fri, 2016-09-16 09:00 - 12:00
Location: 
Henn 309
Local Contact: 
Physics and Astronomy, UBC
Intended Audience: 
Public

Abstract:
Quantum field theories have been an essential tool in studying various and different physical systems in the past century. In this thesis, we will focus on the quantum field theories in 2+1d. Quantum field theories in 2+1 d are of particular interest as they are something in between 1+1 dimensional quantum field theories that enjoy infinite tower of symmetries and 3+1 dimensional quantum field theories that mean-field-theory approximation works well at. We develop a large N expansion method to study the non-perturbative regime of a special family of 2+1d quantum field theories, Weyl semi-metals. We find that these strongly interacting systems could be described as weakly coupled systems.

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