Details
| Original language | English |
|---|---|
| Article number | 155116 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 88 |
| Issue number | 15 |
| Publication status | Published - 14 Oct 2013 |
Abstract
We describe how to implement the time-dependent variational principle for matrix product states in the thermodynamic limit for nonuniform lattice systems. This is achieved by confining the nonuniformity to a (dynamically expandable) finite region with fixed boundary conditions. The suppression of nonphysical quasiparticle reflections from the boundary of the nonuniform region is also discussed. Using this algorithm we study the dynamics of localized excitations in infinite systems, which we illustrate in the case of the spin-1 antiferromagnetic Heisenberg model and the 4 model.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B - Condensed Matter and Materials Physics, Vol. 88, No. 15, 155116, 14.10.2013.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Variational matrix product ansatz for nonuniform dynamics in the thermodynamic limit
AU - Milsted, Ashley
AU - Haegeman, Jutho
AU - Osborne, Tobias J.
AU - Verstraete, Frank
PY - 2013/10/14
Y1 - 2013/10/14
N2 - We describe how to implement the time-dependent variational principle for matrix product states in the thermodynamic limit for nonuniform lattice systems. This is achieved by confining the nonuniformity to a (dynamically expandable) finite region with fixed boundary conditions. The suppression of nonphysical quasiparticle reflections from the boundary of the nonuniform region is also discussed. Using this algorithm we study the dynamics of localized excitations in infinite systems, which we illustrate in the case of the spin-1 antiferromagnetic Heisenberg model and the 4 model.
AB - We describe how to implement the time-dependent variational principle for matrix product states in the thermodynamic limit for nonuniform lattice systems. This is achieved by confining the nonuniformity to a (dynamically expandable) finite region with fixed boundary conditions. The suppression of nonphysical quasiparticle reflections from the boundary of the nonuniform region is also discussed. Using this algorithm we study the dynamics of localized excitations in infinite systems, which we illustrate in the case of the spin-1 antiferromagnetic Heisenberg model and the 4 model.
UR - http://www.scopus.com/inward/record.url?scp=84885814418&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.88.155116
DO - 10.1103/PhysRevB.88.155116
M3 - Article
AN - SCOPUS:84885814418
VL - 88
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 15
M1 - 155116
ER -