English

Beta-functions of non-linear $\sigma$-models for disordered and interacting electron systems

Disordered Systems and Neural Networks 2017-07-11 v2 Statistical Mechanics High Energy Physics - Theory

Abstract

We provide and study complete sets of one-loop renormalization group equations of several Finkel'stein non-linear σ\sigma-models, the effective field theories describing the diffusive quantum fluctuations in correlated disordered systems. We consider different cases according to the presence of certain symmetries induced by the original random Hamiltonians, and we show that, for interacting systems, the Cartan's classification of symmetry classes is not enough to uniquely determine their scaling behaviors.

Keywords

Cite

@article{arxiv.1610.05691,
  title  = {Beta-functions of non-linear $\sigma$-models for disordered and interacting electron systems},
  author = {Luca Dell'Anna},
  journal= {arXiv preprint arXiv:1610.05691},
  year   = {2017}
}

Comments

16 pages, 4 figures, final version for the special issue "Many-Body Localization" in Annalen der Physik

R2 v1 2026-06-22T16:24:26.814Z