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Phase Diagram of the 1D t-J Model

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High Performance Computing in Science and Engineering '11

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Abstract

The ground-state phase diagram of the t-J model in one dimension is studied by means of the Density Matrix Renormalization Group. The phase boundaries separating the repulsive from the attractive Luttinger-liquid (LL) phase, and also the boundaries of the spin-gap region and phase-separation, are determined on the basis of correlation functions and energy gaps. In particular, we shed light on a contradiction between variational and renormalization-group (RG) results about the extent of the spin-gap phase, that results larger than the variational but smaller than the RG one.

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Author information

Authors and Affiliations

  1. Institut für Theoretische Physik III, Universität Stuttgart, Pfaffenwaldring 57, D-70550, Stuttgart, Germany

    A. Moreno & A. Muramatsu

  2. JILA, Department of Physics, University of Colorado, Boulder, CO, 80309-0440, USA

    S. Manmana

Authors
  1. A. Moreno
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  2. A. Muramatsu
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  3. S. Manmana
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Editor information

Editors and Affiliations

  1. Zentrum für Informationsdienste und, Hochleistungsrechnen (ZIH), TU Dresden, Helmholtzstr. 10, Dresden, 01069, Germany

    Wolfgang E. Nagel

  2. , Abt. Angewandte Mathematik, Universität Freiburg, Hermann-Herder-Str. 10, Freiburg, 79104, Germany

    Dietmar B. Kröner

  3. , Höchstleistungsrechenzentrum, Universität Stuttgart, Nobelstraße 19, Stuttgart, 70569, Germany

    Michael M. Resch

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Moreno, A., Muramatsu, A., Manmana, S. (2012). Phase Diagram of the 1D t-J Model. In: Nagel, W., Kröner, D., Resch, M. (eds) High Performance Computing in Science and Engineering '11. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-23869-7_13

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