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Quantum Hall effect and field-theoretic dualities

Seminar
Tuesday, 12.06.2018 14:00

Speakers: Prof. Dam Thanh Son (Enrico Fermi Institute, University of Chicago)
Place: Seminar room No.117, Institute of Physics of the CAS, Pod Vodárenskou věží 1, Prague 8
Presented in anglicky
Organisers: Department of Particle Theory and Phenomenology

Abstract:

One of the most fruitful approaches to the fractional quantum Hall effect is based on the notion of a low-energy degree of freedom called the "composite fermion." I will describe a recent development in the theory of the fractional quantum Hall effect known under the name of the "Dirac composite fermion theory." This theory, in contrast to previous attempts, preserves the particle-hole symmetry of the microscopic theory. This theory is one example of a nontrivial duality between nonsupersymmetric field theories in 2+1 dimensions. I will also discuss the predictions of the new theory. Reference: arXiv:1805.04472.