2D massless boson, quantum sine-Gordon model and bosonization: Elementary introduction. Part II
Starts 19 Feb 2004 11:00
Ends 19 Feb 2004 20:00
Central European Time
ICTP
MB-2-239
Strada Costiera, 11
I - 34151 Trieste (Italy)
ABSTRACT:
These lectures are complementary to the introduction to Conformal
Field Theory given recently by Marina Huerta. Their goal is to show
how main ideas and mathematical structures of the formal CFT approach
show up in a simple and well-known example -- the 2D Gaussian model
(free massless boson). We will also consider a typical deformation of
this theory, the 2D sine-Gordon model, that displays a topological
(Berezinskii-Kosterlitz-Thouless) transition. Questions related to
fermion-boson democracy will be finally discussed.