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- J L Pichard, G R Sarma
- 1980

Using a new and powerful real space renormalisation method recently introduced for phase transitions, we prove numerically that two dimensions are marginal for Anderson localisation. An associated… (More)

- . Frahm, A. M uller-Groeling, J L Pichard, D., WeinmannCEA
- 1995

The pair localization length L 2 of two interacting electrons in one{ dimensional disordered systems is studied numerically. Using two direct approaches , we nd L 2 / L 1 , where L 1 is the… (More)

2014 The two-probe conductance, g, of a disordered quantum system with N tranverse scattering channels is determined by N real parameters ("levels") {03BBi} characterizing the transfer matrix M. The… (More)

- S. N. Evangelou, J L Pichard
- Physical review letters
- 2000

We obtain numerically a scale-invariant distribution of the bandwidths S for the critical Harper model, which is closely described by a semi-Poisson P(S)=4Sexp(-2S) curve. After a suitable unfolding… (More)

We consider the energy level statistics of non-interacting electrons which diffuse in a d-dimensional disordered metallic conductor of characteristic Thouless energy Ec. We assume that the level… (More)

For intermediate Coulomb energy to Fermi energy ratios rs, spinless fermions in a two-dimensional random potential form a new quantum phase, different from the Fermi glass (weakly interacting… (More)

The ground state of an electron gas is characterized by the interparticle spacing to the effective Bohr radius ratio rs = a/a ∗ B. For polarized electrons on a two dimensional square lattice with… (More)

- Thania Jakobsen, Lone Keld Petersen, +5 authors J L Pichard
- Ugeskrift for laeger
- 1991

A total of 212 patients with acute sports injuries were allotted at random to treatment with 20 mg tenoxicam daily, 20 piroxicam daily or a placebo for ten days. The injuries could be subdivided into… (More)

We investigate the statistical properties of the scattering matrix S describing the electron transport through quasi-one dimensional disordered systems. For weak disorder (metallic regime), the… (More)

- Per Kragh-Sørensen, Päivi Holm, +4 authors J L Pichard
- Psychopharmacology
- 2005

Bromazepam was compared with placebo and with chlorprothixene in a randomized, double-blind group-comparative multicenter trial in general practice. Two hundred and forty-five patients with… (More)