# Field-dependent quasiparticles in the infinite-dimensional Hubbard model

@article{Bauer2007FielddependentQI,
title={Field-dependent quasiparticles in the infinite-dimensional Hubbard model},
author={Johannes Bauer and A. C. Hewson},
journal={Physical Review B},
year={2007},
volume={76},
pages={035118}
}
• Published 25 May 2007
• Physics
• Physical Review B
We present dynamical mean-field theory (DMFT) results for the local spectral densities of the one- and two-particle response functions for the infinite-dimensional Hubbard model in a magnetic field. We look at the different regimes corresponding to half-filling, near half-filling, and well away from half-filling, for intermediate and strong values of the local interaction $U$. The low energy results are analyzed in terms of quasiparticles with field-dependent parameters. These renormalized…
• Physics
• 2015
We contrast the transport properties (dc resistivity, Seebeck coefficient), optical conductivity, spectral functions, dynamical magnetic susceptibility, and the nuclear magnetic resonance $1/{T}_{1}$
• Physics
Journal of physics. Condensed matter : an Institute of Physics journal
• 2011
A zero temperature itinerant metamagnetic transition, reflected in the discontinuous changes in magnetization as well as in the hysteresis, from a paramagnetic metallic state to a polarized quasi-ferromagnetic (QFM) state, at intermediate and large interaction strengths (U).
• Physics
• 2009
Using the dynamical mean-field theory (DMFT) with the numerical renormalization-group impurity solver we study the paramagnetic phase of the Hubbard model with the density of states (DOS)
A brief account of the zero temperature magnetic response of a system of strongly correlated electrons in strong magnetic field is given in terms of its quasiparticle properties. The scenario is
• Physics
Journal of physics. Condensed matter : an Institute of Physics journal
• 2010
It is believed that the mechanism of FFLO stabilization by SDM is generic: other high-field low-temperature (HFLT) superconducting phases should benefit from SDM as well.
• Physics
• 2010
The observation of the Fulde-Ferrell-Larkin-Ovchinnikov FFLO superconducting state and detection of the spin-dependent effective masses SDM of quasiparticles in heavy-fermion systems are combined
The convergence to the self-consistency in the dynamical-mean-field-theory (DMFT) calculations for models of correlated electron systems can be significantly accelerated by using an appropriate
• Physics
Physical review letters
• 2020
It is demonstrated that the numerical renormalization group is a viable tool to monitor this crossover in a real-materials setting and directly observe this spin-orbital scale separation and shows that the van Hove singularity drives strong orbital differentiation.
• Physics
• 2011
We review the basic ideas of a renormalized perturbation theory which works directly in terms of fully dressed quasiparticles, and its application to the calculation of the current through a quantum
• Physics
Journal of physics. Condensed matter : an Institute of Physics journal
• 2014
The Hubbard model in an applied magnetic field is discussed and the properties of neutral spin fermions within the so-called statistically consistent Gutzwiller approximation are analyzed and a metamagnetic-like behavior is also singled out in a non-half-filled band case.

## References

SHOWING 1-10 OF 34 REFERENCES

• Physics
• 2005
We show that quasiparticles in a magnetic field of arbitrary strength $H$ can be described by field dependent parameters. We illustrate this approach in the case of an Anderson impurity model and use
• Physics
• 1996
We review the dynamical mean-field theory of strongly correlated electron systems which is based on a mapping of lattice models onto quantum impurity models subject to a self-consistency condition.
The Hubbard model is used to calculate static properties of normal-liquid $^{3}\mathrm{He}$ at $T=0$. For this, Gutzwiller's variational approach to that model is employed. The work is based on an
• Physics
• 1980
The temperature-dependent impurity susceptibility for the symmetric Anderson model is calculated for all physically relevant values of its parameters $U$ (the Coulomb correlation energy) and
• SasoItoh
• Physics
Physical review. B, Condensed matter
• 1996
The field-induced insulator-to-metal transition occurs at a critical field, which is of the order of the single-ion Kondo temperature, and the transition is of first order, but could be of second order in the infinite system size limit.
The zero temperature transition from a paramagnetic metal to a paramagnetic insulator is investigated in the Dynamical Mean Field Theory for the Hubbard model. The self-energy of the effective
• Physics
Physical review. B, Condensed matter
• 1995
We discuss specific features of quasiparticles in a strong applied magnetic field and near the Mott-Hubbard localization: the strong spin dependence of the de Haas--van Alphen oscillations, the
The limit of infinite dimension of the Hubbard model was recently introduced by Metzner and Vollhardt as a new type of model with interesting implications. In the present paper the same limit is
• Physics
• 1998
We present a new method for calculating directly the one-particle self-energy of an impurity Anderson model with Wilson's numerical renormalization group method by writing this quantity as the ratio
• Physics
• 1989
A new approach to correlated Fermi systems such as the Hubbard model, the periodic Anderson model etc. is discussed, which makes use of the limit of high spatial dimensions. This limit — which is