Density matrix renormalization group for bosonic quantum Hall effect

Details Density matrix renormalization group for bosonic quantum Hall effect Density matrix renormalization group for bosonic quantum Hall effect

2009-09-21

arxiv.org/abs/0909.3693v2

Phys. Rev. B 81, 125130 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 7 figures, final version as published

Scientific paper

10.1103/PhysRevB.81.125130

We developed a density matrix renormalization-group technique to study quantum Hall fractions of fast rotating bosons. In this paper we present a discussion of the method together with the results which we obtain in three distinct cases of the narrow channel, cylinder and spherical geometries. In the narrow channel case, which is relevant to anisotropic confining traps in the limit of extremely fast rotation, we find a series of zero-temperature phase transitions in the strongly interacting regime as a function of the interaction strength between bosons. We compute energies and density profiles for different filling fractions on a cylinder and compare the convergence rates of the method in the cylinder and a sphere geometries.

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