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Graduate Student Seminar - 03/10/2017

"Phase Transition and Vortex Formation in Quantum Fluids"

by Peter Megson

Friday, March 10, 2017 -- 12:00 p.m.
Large Conference Room, 1207 Energy Research Facility

Advisor:  Professor Daniel Lathrop

Long-range quantum order governs many important condensed matter systems, from ferromagnets to quantum fluids. In many of these systems, the presence of topological defects in the order parameter leads to their defining physical characteristics. These topological defects only appear after the system undergoes a phase transition from a classical state into a state governed by long range quantum order. The mechanism by which these defects are generated through transition is not well understood. We will present experimental studies of superfluid helium through transition and discuss different possible generation mechanisms for the topological defects found in the superfluid state, known as quantum vortices. We will also discuss applications of our studies to various fields, including cosmology and astrophysics.

For additional information about the IREAP Graduate Student Seminars, contact Linus Feder.

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