Tracking incommensurate magnetism with Slave Boson Mean Field Theory

ORAL

Abstract

Accounting for strong correlations is one of the most challenging problems in solid state physics,
and has given rise to the development of a plethora of different methodological approaches. Among them, the slave boson mean field formalism has been shown to successfully describe strongly correlated electron systems such as heavy fermion physics and quantum impurity models. While DMFT is another popular method of use within the scope of these systems, the slave boson mean field method can be applied to problems beyond the reach of DMFT, and such provide an interesting complementary view. In particular, this applies
to models with large Hilbert spaces, and especially the investigation of incommensurate magnetic order where the magnetic unit cell would be too large to describe it within any cluster DMFT framework. Therefore, slave boson mean field is well suited to fill a niche in contemporary methods of condensed matter physics. This talk intends to elaborate on the method of spin rotation invariant slave boson mean
field theory including fluctuations around the saddle point, and its applications to the periodic Anderson model.

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Presenters

  • David Riegler

    Institute for theoretical physics, University of Wuerzburg, Institute for Theoretical Physics, University of Wuerzburg

Authors

  • David Riegler

    Institute for theoretical physics, University of Wuerzburg, Institute for Theoretical Physics, University of Wuerzburg

  • Michael Klett

    Institute for theoretical physics, University of Wuerzburg, Institut für Theoretische Physik und Astrophysik, Julius-Maximilians-Universität Würzburg, Institute for Theoretical Physics, University of Wuerzburg

  • Seulgi Ok

    University of Zurich

  • Titus Neupert

    University of Zurich, Physics, University of Zurich, Physik Institut, University of Zurich

  • Peter K Woelfle

    Karlsruhe Inst of Tech

  • Ronny Thomale

    Institute for Theoretical Physics and Astrophysics, University of Wuerzburg, University of Wurzburg, Institute for theoretical physics, University of Wuerzburg, Institute for Theoretical Physics and Astrophysics, University Wuerzburg, Institut für Theoretische Physik und Astrophysik, Julius-Maximilians-Universität Würzburg, Univ of Wuerzburg, Institute for Theoretical Physics and Astrophysics, University of Würzburg, Institute for Theoretical Physics, University of Wuerzburg, Univ of Wurzburg