Elmar Körding and Franz Wegner 2006 J. Phys. A: Math. Gen. 39 1231 doi:10.1088/0305-4470/39/6/001
Elmar Körding1 and Franz Wegner
Show affiliationsIn 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 nearly always converges to the stable phase. Starting out from the symmetric Hamiltonian and symmetry-broken normal ordering nearly always yields symmetry breaking below the critical temperature.
71.10.-w Theories and models of many-electron systems
64.60.F- Equilibrium properties near critical points, critical exponents
Issue 6 (10 February 2006)
Received 29 November 2005
Published 25 January 2006
Elmar Körding and Franz Wegner 2006 J. Phys. A: Math. Gen. 39 1231
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