Ground state properties of fluxlines in a disordered environment

Abstract

A new numerical method to calculate exact ground states of multi-fluxline systems with quenched disorder is presented, which is based on the minimum cost flow algorithm from combinatorial optimization. We discuss several models that can be studied with this method including their specific implementations, physically relevant observables and results: 1) the N-line model with N fluxlines (or directed polymers) in a d-dimensional environment with point and/or columnar disorder and hard or soft core repulsion; 2) the vortex glass model for a disordered superconductor in the strong screening limit and 3) the Sine-Gordon model with random pase shifts in the strong coupling limit.

4 pages RevTeX, 3 eps-figures included

References in corpus (4)

• Weakly Pinned Bose Glass vs. Mott Insulator Phase in Superconductors
• Frustrated Systems: Ground State Properties via Combinatorial Optimization
• Properties of the Bose glass phase in irradiated superconductors near the matching field
• Application of a minimum cost flow algorithm to the three-dimensional gauge glass model with screening

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• Super-roughening as a disorder-dominated flat phase
• Ground-States of Two Directed Polymers
• Theory and Experiments for Disordered Elastic Manifolds, Depinning, Avalanches, and Sandpiles
• Disorder induced roughening transition of many elastic lines in a periodic potential