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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Symmetry breaking in a gas of bosons - an approach
using constructive field theory - Horst Knoerrer
(ETH Zürich)
DTSTART;TZID=Europe/London:20180905T113000
DTEND;TZID=Europe/London:20180905T123000
UID:TALK109204AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/109204
DESCRIPTION:T.Balaban\, J.Feldman\, E.Trubowitz and the speake
r have the long term goal to rigorously demonstrat
e symmetry breaking in a gas of weakly interaction
bosons hopping on a three-dimensional lattice. Te
chnically\, to show that the correlation functions
decay at a nonintegrable rate when the chemical p
otential is sufficiently positive\, the nonintegra
bility reflecting the presence of a long range Gol
dstone boson mediating the inteaction between quas
iparticles in the superfluid condensate.
In
addition to a report on the status of this progra
m\, I will try to describe in more detail the meth
od of block spin transformations that we use to de
fine and control a renormalization group flow.
LOCATION:Seminar Room 1\, Newton Institute
CONTACT:INI IT
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