Density matrix technique for ground state calculations


Croo de Jongh, du, M.S.L. and Doumen, J.M. and Leeuwen, van, J.M.J. (1999) Density matrix technique for ground state calculations. Computer Physics Communications, 121/12 (Sept/O). pp. 483-488. ISSN 0010-4655

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Abstract:The density matrix approach is a technique to calculate the lowest eigenvalue of a large matrix such as occurring in quantum mechanical systems. So far the method works very well for systems with a linear structure. The limitations for a planar structure, from critical correlations and from slowdown, due to the existence of slow modes, will be discussed using the transverse Ising model as illustration.
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Copyright:Elsevier Science B.V.
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