About Effective Hamiltonians for Hubbard Model in the Regime of Strong Electron Correlation

Описание

Тип публикации: статья из журнала

Год издания: 2005

Ключевые слова: Energy efficiency, Hamiltonians, Mathematical models, Metallography, Problem solving, Electron correlation, Low energy spectrum, Two electron problem, Electron transitions

Аннотация: The problem of the transition to the effective Hamiltonian is analyzed on the basis of the exact solution to the two-electron problem for the Hubbard, t-J, and t-J* models. It is shown that in the strong-electron-correlation regime of the passage to the effective Hamiltonian is correct in the t-J* model only. In this case, the t-J*Показать полностьюmodel reproduces the low-energy spectrum correctly for vertical bar t vertical bar

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Издание

Журнал: PHYSICS OF METALS AND METALLOGRAPHY

Выпуск журнала: Vol. 100

Номера страниц: 10-13

ISSN журнала: 0031918X

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

Авторы

  • Val'kov V.V. (Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia; Siberian fed univ, Krasnoyarsk State Univ, Krasnoyarsk 660075, Russia; Siberian fed univ, Krasnoyarsk State Tech Univ, Krasnoyarsk 660074, Russia)
  • Mitskan V.A. (Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia; Siberian fed univ, Krasnoyarsk State Tech Univ, Krasnoyarsk 660074, Russia)

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