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題名 Entanglement entropy dynamics of disordered quantum spin chains
作者 Iglói, Ferenc ; Szatmári, Zsolt ; Lin, Yu-Cheng
林瑜琤
貢獻者 應物所
日期 2012.03
上傳時間 21-Mar-2014 18:02:03 (UTC+8)
摘要 By means of free fermionic techniques we study the time evolution of the entanglement entropy S(t) of a block of spins in the random transverse-field Ising chain after a sudden change of the parameters of the Hamiltonian. We consider global quenches, when the parameters are modified uniformly in space, as well as local quenches, when two disconnected blocks are suddenly joined together. For a noncritical final state, the dynamical entanglement entropy is found to approach a finite limiting value for both types of quenches. If the quench is performed to the critical state, the entropy grows for an infinite block as S(t)∼lnlnt. This type of ultraslow increase is explained through the strong disorder renormalization group method.
關聯 Physical Review B, 85(9), 094417(1-8)
資料來源 http://dx.doi.org/10.1103/PhysRevB.85.094417
資料類型 article
dc.contributor 應物所en_US
dc.creator (作者) Iglói, Ferenc ; Szatmári, Zsolt ; Lin, Yu-Chengen_US
dc.creator (作者) 林瑜琤zh_TW
dc.date (日期) 2012.03en_US
dc.date.accessioned 21-Mar-2014 18:02:03 (UTC+8)-
dc.date.available 21-Mar-2014 18:02:03 (UTC+8)-
dc.date.issued (上傳時間) 21-Mar-2014 18:02:03 (UTC+8)-
dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/64830-
dc.description.abstract (摘要) By means of free fermionic techniques we study the time evolution of the entanglement entropy S(t) of a block of spins in the random transverse-field Ising chain after a sudden change of the parameters of the Hamiltonian. We consider global quenches, when the parameters are modified uniformly in space, as well as local quenches, when two disconnected blocks are suddenly joined together. For a noncritical final state, the dynamical entanglement entropy is found to approach a finite limiting value for both types of quenches. If the quench is performed to the critical state, the entropy grows for an infinite block as S(t)∼lnlnt. This type of ultraslow increase is explained through the strong disorder renormalization group method.en_US
dc.format.extent 565378 bytes-
dc.format.mimetype application/pdf-
dc.language.iso en_US-
dc.relation (關聯) Physical Review B, 85(9), 094417(1-8)en_US
dc.source.uri (資料來源) http://dx.doi.org/10.1103/PhysRevB.85.094417en_US
dc.title (題名) Entanglement entropy dynamics of disordered quantum spin chainsen_US
dc.type (資料類型) articleen