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Absence of hysteresis at the Mott-Hubbard metal-insulator transition in infinite dimensions

J. Schlipf·M. Jarrell·P. G. J. van Dongen·N. Blümer·S. Kehrein·Th. Pruschke·D. Vollhardt
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Abstract

The nature of the Mott-Hubbard metal-insulator transition in the infinite-dimensional Hubbard model is investigated by Quantum Monte Carlo simulations down to temperature T=W/140 (W=bandwidth). Calculating with significantly higher precision than in previous work, we show that the hysteresis below T_{IPT}\simeq 0.022W, reported in earlier studies, disappears. Hence the transition is found to be continuous rather than discontinuous down to at least T=0.325T_{IPT}. We also study the changes in the density of states across the transition, which illustrate that the Fermi liquid breaks down before the gap opens.

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J. Schlipf, M. Jarrell, P. G. J. van Dongen, N. Blümer, S. Kehrein, Th. Pruschke, D. Vollhardt. 1999-02-19. Absence of hysteresis at the Mott-Hubbard metal-insulator transition in infinite dimensions. https://doi.org/10.1103/physrevlett.82.4890

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