BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//talks.cam.ac.uk//v3//EN
BEGIN:VTIMEZONE
TZID:Europe/London
BEGIN:DAYLIGHT
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
TZNAME:BST
DTSTART:19700329T010000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
TZNAME:GMT
DTSTART:19701025T020000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Kinetic transport in crystals and quasicrystals -
Marklof\, J (University of Bristol)
DTSTART;TZID=Europe/London:20150326T100000
DTEND;TZID=Europe/London:20150326T110000
UID:TALK58607AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/58607
DESCRIPTION:The Lorentz gas is one of the simplest\, most wide
ly used models to study the transport properties o
f rarified gases in matter. It describes the dynam
ics of a cloud of non-interacting point particles
in an infinite array of fixed spherical scatterers
. More than one hundred years after its conception
\, it is still a major challenge to understand the
nature of the kinetic transport equation that gov
erns the macroscopic particle dynamics in the limi
t of low scatterer density (the Boltzmann-Grad lim
it). Lorentz suggested that this equation should b
e the linear Boltzmann equation. This was confirme
d in three celebrated papers by Gallavotti\, Spohn
\, and Boldrighini\, Bunimovich and Sinai\, under
the assumption that the distribution of scatterers
is sufficiently disordered. In the case of strong
ly correlated scatterer configurations (such as cr
ystals or quasicrystals)\, we now understand why t
he linear Boltzmann equation fails and what to sub
stitute it with. A particularly striking featur e
of the periodic Lorentz gas is a heavy tail for th
e distribution of free path lengths\, with a diver
ging second moment\, and superdiffusive transport
in the limit of large times.\n\nJoint work with A.
Strombergsson and B. Toth.\n
LOCATION:Seminar Room 1\, Newton Institute
CONTACT:Mustapha Amrani
END:VEVENT
END:VCALENDAR