BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Europe/Vienna
BEGIN:DAYLIGHT
DTSTART:20240331T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20241027T020000
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:CET
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20260406T000359Z
UID:1715072400@ist.ac.at
DTSTART:20240507T110000
DTEND:20240507T120000
DESCRIPTION:Speaker: Frédéric Chevy\nhosted by Mikhail Lemeshko\nAbstract
 : Summary: Understanding the properties of a large number of particles in 
 interactions is one of the frontiers of modern physics: from the stability
  of sandpiles to the formation of large structures in the universe  or th
 e behaviour of complex neural networks\, it is at the core of almost all c
 urrent fields of research. In the quantum world this question explores t
 he properties of quantum materials or those of nuclear matter and the co
 mbination of quantum mechanics and many-body physics leads to the most c
 omplex challenges probably  ever faced by the physics community.Thanks to
  the versatility of the manipulation techniques of ultracold atoms with li
 ght and magnetic fields it is now possible to explore a broad variety of 
 quantum many-body systems with an unprecedented control of the experiment
 al parameters. In my talk\, I will discuss the case of the simplest yet no
 n trivial situation where a single particle (the so-called impurity) is im
 mersed into a quantum many-body ensemble. The interactions with the back
 ground creates a cloud of excitations that dresses the impurity and gives 
 rise to a quasi-particle. The properties of this so-called polaron are str
 ongly affected by the nature of the  background and I will show that ultr
 acold atoms can be used to explore several instances of this problem: the 
 Fermi polaron\, where the background is an ideal gas of spin-polarized fer
 mions\, the Bose polaron where the impurity is immersed in a Bose-Einstein
  condensate of weakly interacting bosons\, and finally the superfluid pola
 ron where the medium is an attractive gas of spin 1/2 fermions and that in
 terpolates between the two previous situations. 
LOCATION:Heinzel Seminar Room / Ground Floor / Office Building West\, ISTA
ORGANIZER:
SUMMARY:Frédéric Chevy: Quantum many-body physics with ultracold atoms: S
 ailing the quantum seas | Talk by Frédéric Chevy
URL:https://talks-calendar.ista.ac.at/events/4715
END:VEVENT
END:VCALENDAR