Total spin in the density matrix renormalization group algorithm |
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| Authors: | Ian P Mcculloch Miklós Gulácsi |
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| Institution: | 1. Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University , Beijing 100875, China liu996@263.net |
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| Abstract: | A new density matrix renormalization group (DMRG) algorithm is presented which conserves the total spin. This is the first time that standard DMRG is extended to exploit fully the symmetries of the Hamiltonian. The obtained general procedure works for any operator, even operators that do not commute with the Hamiltonian. The new method gives substantial improvements over the standard DMRG. |
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| Keywords: | porosity porous metal metal foam specific surface area |
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