TY - JOUR UR - http://lib.ugent.be/catalog/pug01:5639927 ID - pug01:5639927 LA - eng TI - Variational matrix product ansatz for nonuniform dynamics in the thermodynamic limit PY - 2013 JO - (2013) PHYSICAL REVIEW B SN - 1098-0121 PB - 2013 AU - Milsted, Ashley AU - Haegeman, Jutho WE05 002002144058 AU - Osborne, Tobias J AU - Verstraete, Frank 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 growable) finite region with fixed boundary conditions. The suppression of unphysical 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 anti-ferromagnetic Heisenberg model and the ϕ4 model. ER -Download RIS file
00000nam^a2200301^i^4500 | |||
001 | 5639927 | ||
005 | 20180813143437.0 | ||
008 | 140707s2013------------------------eng-- | ||
022 | a 1098-0121 | ||
024 | a 000325563200003 2 wos | ||
024 | a 1854/LU-5639927 2 handle | ||
024 | a 10.1103/PhysRevB.88.155116 2 doi | ||
040 | a UGent | ||
245 | a Variational matrix product ansatz for nonuniform dynamics in the thermodynamic limit | ||
260 | c 2013 | ||
520 | a 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 growable) finite region with fixed boundary conditions. The suppression of unphysical 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 anti-ferromagnetic Heisenberg model and the ϕ4 model. | ||
598 | a A1 | ||
100 | a Milsted, Ashley | ||
700 | a Haegeman, Jutho u WE05 0 002002144058 0 802000026611 | ||
700 | a Osborne, Tobias J | ||
700 | a Verstraete, Frank u WE05 0 801001551653 | ||
650 | a Physics and Astronomy | ||
653 | a ANTIFERROMAGNETIC HEISENBERG CHAIN | ||
653 | a STATES | ||
653 | a RENORMALIZATION-GROUP | ||
653 | a SPIN SYSTEMS | ||
653 | a HALDANE-GAP | ||
653 | a IMPURITY | ||
773 | t PHYSICAL REVIEW B g Phys. Rev. B. 2013. 88 (15) q 88:15< | ||
856 | 3 Full Text u https://biblio.ugent.be/publication/5639927/file/5652438 z [ugent] y Milsted_2013_PRB_88_15_155116.pdf | ||
920 | a article | ||
852 | x WE b WE05 | ||
922 | a UGENT-WE |
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