2 papers
cond-mat.mes-hall1998
Path Integral for Composite Fermions in the Half-Filled Lowest Landau Level
W. Weller, J. Dietel, Th. Koschny +1
We consider electrons in two dimensions in a strong magnetic field at half filling of the lowest Landau level using the Chern-Simons approach. Starting from a lattice Hamiltonian f…
cond-mat1996
A new field-theoretical formulation for the motion of an electron in a quenched disorder potential
W. Weller, F. Stefani, M. Souleiman
Following a proposal by Aronov and Ioselevich, we express the Green functions (GF) of a noninteracting disordered Fermi system as a functional integral on a real time/frequency lat…