NUIM Math. Physics seminar

Steve Simon 
Oxford University and E. T. S. Walton Visiting Fellow

Topological Phases of Matter and Why You Should Be Interested

Friday 02 October 2009 at 2.00 p.m.

Callan Hall, NUIM South Campus

Abstract:

In two dimensional topological phases of matter, processes depend on gross topology rather than detailed geometry. Thinking in 2+1 dimensions, particle world lines can be interpreted as knots or links, and the amplitude for certain processes becomes a topological invariant of that link. While sounding rather exotic, we believe that such phases of matter not only exist, but have actually been observed in quantum Hall experiments, and could provide a uniquely practical route to building a quantum computer.   Possibilities have also been proposed for creating similar physics in systems ranging from superfluid helium to strontium ruthenate to spin systems to cold atoms. 

All are welcome. Tea/coffee and biscuits to follow. For directions to the Dept. please check http://www.thphys.nuim.ie/map.php