Functional renormalization for spontaneous symmetry breaking

Verfügbarkeit:
Auf Lager.
Artikelnummer:
891895
  • Produktbeschreibung

    Functional renormalization for spontaneous symmetry breaking

    The two-dimensional Hubbard model for interacting fermions on a square lattice is widely considered as a promising approach for the understanding of Cooper pair formation in the high-Tc cuprates. In the present work this model is investigated by means of the functional renormalization group, based on an exact flow equation for the effective average action. In addition to the fermionic degrees of freedom, bosonic fields are introduced which correspond to different collective orders, for example magnetism and superconductivity. The interactions between bosons and fermions are determined by means of the method of "flowing bosonization", describable as a continuous, scale- dependent Hubbard-Stratonovich transformation. This allows an efficient parameterization of the momentum- dependent effective interaction between fermions, and it makes it possible to follow the renormalization flow into the regimes with broken symmetries, where bosonic fluctuations determine the types of order which are present on large length scales. Numerical results for the phase diagram are presented, which include the mutual influence of the competing types of order.
  • Zusatzinformation

    Autor
    Bindung
    Taschenbuch
    Verlag
    Südwestdeutscher Verlag für Hochschulschriften
    ISBN / EAN
    9783838124957
  • Sie könnten auch an folgenden Produkten interessiert sein

    Art.Nr. 1028277

    Reiß:Praxisbuch IT-Dokumentation

    79,95
    Art.Nr. 1698114

    Quaschning,V.:Regenerative Energ.m.DVD

    53,90
    Art.Nr. 1851710

    Oehlke:Hymenopterorum catal ogus 16

    525,50
  • 0 Kundenmeinungen

    Schreiben Sie selbst eine Rezension

    Ihre Meinung interessiert uns – und hilft anderen Kunden bei der Auswahl.