Name
Title | ||
|---|---|---|
Many-body quantum dynamics by adiabatic path-integral molecular dynamics: Disordered Frenkel Kontorova models |
Abstract | ||
|---|---|---|
The spectral density of quantum mechanical Frenkel Kontorova chains moving in disordered, external potentials is investigated by means of path-integral molecular dynamics. If the second moment of the embedding potential is well defined (roughness exponent H=0), there is one regime in which the chain is pinned (large masses m of chain particles) and one in which it is unpinned (small m). If the embedding potential can be classified as a random walk on large length scales (H=1/2), then the chain is always pinned irrespective of the value of m. For H=1/2, two phonon-like branches appear in the spectra. |
Year | DOI | Venue |
|---|---|---|
2005 | 10.1016/j.cpc.2005.03.094 | Computer Physics Communications |
Keywords | Field | DocType |
05.60.Gg,71.10.Pm,73.43.Jn | Adiabatic process,Quantum,Exponent,Random walk,Quantum mechanics,Molecular dynamics,Condensed matter physics,Path integral molecular dynamics,Quantum dynamics,Second moment of area,Physics | Journal |
Volume | Issue | ISSN |
169 | 1 | 0010-4655 |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Florian R. Krajewski | 1 | 0 | 0.34 |
| Martin H. Müser | 2 | 3 | 2.15 |