2 papers
cond-mat.mes-hall2001
Exact Diagonalization of the Fractional Quantum Hall Many-Body Hamiltonian in the Lowest Landau Level
Detlef Lehmann
For a gaussian interaction V(x,y)=λe^{-(x^2+y^2)/r^2} with long range r>>l_B, l_B the magnetic length, we rigorously prove that the eigenvalues of the finite volume Hamiltonian H_{…
math-ph1998
The Global Minimum of the Effective Potential of the Many-Electron System with Delta-Interaction
Detlef Lehmann
We prove that the global minimum of the real part of the full effective potential of the many-electron system with attractive delta-interaction is in fact given by the BCS mean fie…