A new approximation in the functional integral approach: Beyond the first harmonic approximation

DOI10.1016/S0375-9601(98)00180-7zbMath0940.82032MaRDI QIDQ1966715

Guicun Ma, Xian-Xi Dai

Publication date: 8 March 2000

Published in: Physics Letters. A (Search for Journal in Brave)

zbMATH Keywords

functional integral approachsingle cross diagram approximationsymmetric Anderson model

Mathematics Subject Classification ID

Disordered systems (random Ising models, random Schrödinger operators, etc.) in equilibrium statistical mechanics (82B44) Path integrals in quantum mechanics (81S40)

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