Jan. 30, 2008
(past)
12:10 p.m.
to 1:30 p.m.
60 St. George Street, Burton Tower, MP 408
Ting-Pong Choy
speaker details
Ting-Pong Choy
Abstract:
One of the difficulties in understanding doped Mott insulators is that
the available physical degrees of freedom are larger than the
number
of electrons that can be added in the low energy scale. I will
illustrate this in terms of spectral weight transfer and resolve
this
by introducing a new effective low-energy theory in which the high
energy degree of freedom is integrating out explicitly. A charge 2e
bosonic
field emerges at low energy which can be interpreted as the additional
physical degree of freedom in low energy. I will show
that many of the normal state properties of the cuprates can result from this new 2e charge bosonic field and a prediction for the
existence of this new bosonic field which can be observed in the electron energy loss spectroscopy at finite momentum and frequency will be discussed.
that many of the normal state properties of the cuprates can result from this new 2e charge bosonic field and a prediction for the