期刊
PHYSICAL REVIEW B
卷 78, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.113101
关键词
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资金
- MEXT
- Academic Center for Computing and Media Studies, Kyoto University (ACCMS)
- Yukawa International Program
We propose a density matrix renormalization group (DMRG) technique at finite temperatures. As is the case of the ground-state DMRG, we use a single-target state that is calculated by making use of a regulated polynomial expansion. Both static and dynamical quantities are obtained after a random-sampling and averaging procedure. We apply this technique to the one-dimensional Hubbard model at half filling and find that this gives excellent results at low temperatures.
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