Coulomb repulsion versus Hubbard repulsion in a disordered chain

Physics – Condensed Matter – Disordered Systems and Neural Networks

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

8 pages, 10 figures

Scientific paper

10.1007/PL00011105

We study the difference between on site Hubbard and long range Coulomb repulsions for two interacting particles in a disordered chain. While Hubbard repulsion can only yield weak critical chaos with intermediate spectral statistics, Coulomb repulsion can drive the two particle system to quantum chaos with Wigner-Dyson spectral statistics. For intermediate strengths U of the two repulsions in one dimension, there is a crossover regime where delocalization and spectral rigidity are maximum, whereas the limits of weak and strong U are characterized by a stronger localization and uncorrelated energy levels.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Coulomb repulsion versus Hubbard repulsion in a disordered chain does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Coulomb repulsion versus Hubbard repulsion in a disordered chain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coulomb repulsion versus Hubbard repulsion in a disordered chain will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-392439

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.