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Department of Mathematical Sciences

Seminar Archives

On this page you can find information about seminars in this and previous academic years, where available on the database.

Topological Solitons Seminar: Bright matter-wave solitons in attractively interacting Bose-Einstein condensates

Presented by Simon Gardiner, Durham (physics department)

16 November 2011 13:00 in CM221

When a dilute gas of bosonic atoms is cooled to degeneracy it passes through a quantum phase transition to form a Bose-Einstein condensate (BEC). Beyond this point the properties and dynamics of the BEC can frequently be very well described by a nonlinear classical field equation, the so-called Gross-Pitaevskii equation, which is capable of supporting a variety of excitations, including solitons and vortices. Bright solitons are of particular interest because they have attractive stability properties for potential applications in metrology and interferometry. I will discuss why and to what degree this classical field description is a valid approximation, and how bright solitons manifest themselves within this system.

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