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Density of states for one hole in a half filled infinite U two-dimensional Hubbard model |
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| Authors: | S V Meshkov D V Berkov |
| Institution: | Centre de Recherches sur les Très Basses Températures, C.N.R.S., 25 Avenue des Martyrs, Grenoble 38042, France Institute of Chemical Physics, 142432 Chernogolovka, Moscow District, Russian Federation |
| Abstract: | We investigate this problem by two methods. In the first one the density of states is determined from its moment expansion. In the second approach an imaginary time Green function obtained by a special world line Monte Carlo algorithm is analytically continued to the real frequency axis. |
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