Invitation to ICTP Colloquium by Prof. J. Dalibard, "Topology in atomic Flatland", on Wednesday 5 September at 16.30 hrs in Budinich Lecture hall.
director at ictp.it
Mon Sep 3 09:22:29 CEST 2018
ICTP is pleased to announce the forthcoming ICTP Colloquium on "Topology
in atomic Flatland", by Professor Prof. J. Dalibard. The talk will take
place on *Wednesday 5 September 2018 at 16:30 hrs*, in the Budinich
Lecture Hall, Leonardo Building, ICTP.
Prof. J. Dalibard heads an experimental research group at CNRS-ENS and
Collège de France, Paris. Pioneering recent achievements include the
first observation of a Kosterlitz-Thouless transition in 2D Bose gases
and studies of vortex dynamics in rotating condensates. Early in his
career, J. Dalibard was responsible for key theoretical ideas in laser
cooling and trapping, including polarization gradient cooling and the
Magneto-optical Trap (MOT), and thus provides in his present work the
link between theoretical and experimental quantum optics. He has also
pioneered theoretical methods to solve the dynamics of open quantum
systems utilizing quantum trajectories. Among his honors we can find the
Pascal Medal of the European Academy of Science (2009), the Max Born
Medal of the American Optical Society (2012), the Davisson–Germer Prize
of the American Physical Society (2012), the Senior BEC award (2017),
and his fellowships in the European Academy of Science, the Optical
Society of America and the American Philosophical Society.
Abstract: The physics of many-body systems strongly depends on their
dimensionality. For example, in a two-dimensional world, most standard
phase transitions towards an ordered state of matter would not occur,
because of the increased role of fluctuations. However non-conventional
"topological" transitions can still take place, as understood initially
by Kosterlitz and Thouless. During the last decade, a novel environment
has been developed for the study of low-dimensional physics. It consists
of cold atomic gases confined in tailor-made light traps, forming thus a
thin layer of material particles. In this talk, Prof. Dalibard will
present some key aspects of these quantum 2D gases, such as their
transition to a superfluid state and their (approximate) scale
invariance. He will also discuss out-of-equilibrium features, like the
nucleation of random currents when merging independent samples.
The Colloquium will be livestreamed at ictp.it/livestream
Light refreshments will be served after the talk.
You are all very warmly invited to attend.
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