English

Localization for one-dimensional random potentials with large local fluctuations

Disordered Systems and Neural Networks 2008-10-27 v2

Abstract

We study the localization of wave functions for one-dimensional Schr\"odinger Hamiltonians with random potentials V(x)V(x) with short range correlations and large local fluctuations such that \Dx\smeanV(x)V(0)=\int\D{x} \smean{V(x)V(0)}=\infty. A random supersymmetric Hamiltonian is also considered. Depending on how large the fluctuations of V(x)V(x) are, we find either new energy dependences of the localization length, locE/lnE\ell_\mathrm{loc}\propto{}E/\ln{E}, locEμ/2\ell_\mathrm{loc}\propto{}E^{\mu/2} with 0<μ<20<\mu<2 or loclnμ1E\ell_\mathrm{loc}\propto\ln^{\mu-1}E for μ>1\mu>1, or superlocalization (decay of the wave functions faster than a simple exponential).

Keywords

Cite

@article{arxiv.0807.0772,
  title  = {Localization for one-dimensional random potentials with large local fluctuations},
  author = {Tom Bienaime and Christophe Texier},
  journal= {arXiv preprint arXiv:0807.0772},
  year   = {2008}
}

Comments

9 pages, LaTeX, 2 eps figures ; v2: Refs. added, small paragraph added p.4, additional table in conclusion

R2 v1 2026-06-21T10:57:34.771Z