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Matrix product state applications for the ALPS project

Dolfi, Michele
Bauer, Bela
Keller, Sebastian
Troyer, Matthias
Published in Computer Physics Communications. 2014, vol. 185, no. 12, p. 3430-3440
Abstract The density-matrix renormalization group method has become a standard computational approach to the low-energy physics as well as dynamics of low-dimensional quantum systems. In this paper, we present a new set of applications, available as part of the ALPS package, that provide an efficient and flexible implementation of these methods based on a matrix product state (MPS) representation. Our applications implement, within the same framework, algorithms to variationally find the ground state and low-lying excited states as well as simulate the time evolution of arbitrary one-dimensional and two-dimensional models. Implementing the conservation of quantum numbers for generic Abelian symmetries, we achieve performance competitive with the best codes in the community. Example results are provided for (i) a model of itinerant fermions in one dimension and (ii) a model of quantum magnetism.
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Research group Groupe Giamarchi
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DOLFI, Michele et al. Matrix product state applications for the ALPS project. In: Computer Physics Communications, 2014, vol. 185, n° 12, p. 3430-3440. https://archive-ouverte.unige.ch/unige:87810

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Deposited on : 2016-09-27

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