Dimitrii Maslov (University of Florida)
The Fermi-liquid theory states that the low-energy properties of
an interacting Fermi system are similar to that of the Fermi gas.
However, in contrast to the Fermi gas, where all thermodynamic
quantities are analytic functions of the appropriate energy scales
(temperature, Zeeman energy, etc.), the next-to-leading
corrections to the Fermi liquid behavior are nonanalytic. Some of
these non-analyticities, such as the non-analytic behavior of the
specific heat in 2D, are due the collinear scattering events,
which become increasingly more probable as the dimensionality is
reduced. In this talk, I will focus on the non-analytic behavior
of the spin susceptibility and discuss its relation to the
breakdown of continuous ferromagnetic quantum phase transitions.
Room 449, Theresienstr. 37 / IV, LMU