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Events on Thursday, October 3rd, 2013

R. G. Herb Condensed Matter Seminar
Quantum Critical Spin Systems
Title to be announced
Time: 10:00 am
Place: 5310 Chamberlin
Speaker: Ribhu K. Kaul, University of Kentucky, Lexington
Abstract: Close to the absolute zero of temperature, when pushed to the edge between two phases of matter, simple lattice Hamiltonians of spins can display the incredibly rich phenomena of "quantum criticality". Quantum critical ground states are described by the most complex wavefunctions known to physicists, yet they can be categorized by "universality classes" that are independent of the details of the Hamiltonians that realize them. In this seminar I will show how such quantum critical spin systems can arise in real-world transition metal oxide materials, and explain our successes in developing quantum many-body simulations of a new universality class of "deconfined" quantum critical points.
Host: Perkins
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