R. G. Herb Condensed Matter Seminars |
Events During the Week of May 4th through May 11th, 2014
Monday, May 5th, 2014
- No events scheduled
Tuesday, May 6th, 2014
- No events scheduled
Wednesday, May 7th, 2014
- No events scheduled
Thursday, May 8th, 2014
- On the way to understanding quantum matter: The death and rebirth of quasiparticles
- Time: 10:00 am
- Place: 5310 Chamberlin Hall
- Speaker: Peter Wolfle
- Abstract: The low energy excitations of quantum matter generally have particle-like character. Their existence allows a relatively simple and economical description of thermodynamic and transport properties of condensed matter at low temperatures. However, the stability of these quasiparticles may be destroyed by fluctuations, e.g. at a classical or quantum phase transition into an ordered state. Inside the ordered phase the quasiparticles may be reborn in different form, together with other kinds of new quasiparticles. Examples are quantum phase transitions of metals into an antiferromagnetic or into a superconducting/superfluid state. Fluctuations may be also enhanced by dimensional reduction or by frustrating interactions, leading to the appearance of new types of quasiparticles. As examples one-dimensional quantum wires and the fractional quantum Hall effect will be considered,where “holons” and “spinons” , composite fermions and fractionally charged quasiparticles can be found
- Host: Perkins
Friday, May 9th, 2014
- No events scheduled