Open AccessQuantum dynamics of a domain wall in the presence of dephasing
Author(s) -
Claudio Castelnovo,
M. I. Dykman,
Vadim Smelyanskiy,
Roderich Moessner,
Leonid P. Pryadko
Publication year - 2018
Publication title -
fizika i tehnika poluprovodnikov
Language(s) - English
Resource type - Journals
eISSN - 1726-7315
pISSN - 0015-3222
DOI - 10.21883/ftp.2018.04.45836.25
Subject(s) - dephasing , spins , physics , dynamics (music) , domain wall (magnetism) , chain (unit) , string (physics) , quantum , domain (mathematical analysis) , particle (ecology) , ising model , quantum mechanics , quantum particle , condensed matter physics , statistical physics , classical mechanics , mathematics , magnetic field , mathematical analysis , oceanography , magnetization , geology , acoustics
We compare quantum dynamics in the presence of Markovian dephasing for a particle hopping on a chain and for an Ising domain wall whose motion leaves behind a string of flipped spins. Exact solutions show that on an infinite chain, the transport responses of the models are nearly identical. However, on finitelength chains, the broadening of discrete spectral lines is much more noticeable in the case of a domain wall.