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2006 J. Phys. A: Math. Gen. 39 1231-1237 doi: 10.1088/0305-4470/39/6/001
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Abstract. 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 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.
PACS numbers: 64.60.Ak, 05.30.−d, 71.10.−w
Print publication: Issue 6 (10 February 2006) |
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