69 citations · 505 across the 27 of their papers we have counts for
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cond-mat.stat-mech2005★ 50 cited
Flow Equations and Normal Ordering. A Survey
Franz Wegner
First we give an introduction to the method of diagonalizing or block-diagonalizing continuously a Hamiltonian and explain how this procedure can be used to analyze the two-dimensi…
cond-mat.stat-mech2005★ 8 cited
Flow Equations and Normal Ordering
Elmar Koerding, Franz Wegner
In this paper we consider flow-equations where we allow a normal ordering which is adjusted to the one-particle energy of the Hamiltonian. We show that this flow converges nearly a…