Abstract
We present the design and implementation details for an object-oriented C++ class library for many-body physics on finite lattices. We divide the simulation in five modules which are strictly separated and interact via well defined interfaces. Special emphasis is put on the simulation algorithms, where we review the stochastic series expansion and the loop-operator update, both used in our Quantum-Monte-Carlo simulations. The second part of the paper is dedicated to an application from solid-state physics: the SO(5) model in two dimensions as a model for high-temperature-superconductivity. We demonstrate that this microscopic model, which aims at unifying antiferromagnetism and superconductivity, reproduces salient features of the temperature versus doping phase diagram.
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Dorneich, A. et al. (2003). Object-Oriented C++ Class Library for Many Body Physics on Finite Lattices and a First Application to High-Temperature Superconductivity. In: Wagner, S., Bode, A., Hanke, W., Durst, F. (eds) High Performance Computing in Science and Engineering, Munich 2002. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-55526-8_25
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DOI: https://doi.org/10.1007/978-3-642-55526-8_25
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-62446-9
Online ISBN: 978-3-642-55526-8
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