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One-particle density matrix occupation spectrum of many-body localized states after a global quench

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One-particle density matrix occupation spectrum of many-body localized states after a global quench. / Lezama, Talía L. M.; Bera, Soumya; Schomerus, Henning Ulrich; Heidrich-Meisner, Fabian; Bardarson, Jens H.

In: Physical review B, Vol. 96, No. 6, 060202(R), 23.08.2017.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Lezama, TLM, Bera, S, Schomerus, HU, Heidrich-Meisner, F & Bardarson, JH 2017, 'One-particle density matrix occupation spectrum of many-body localized states after a global quench', Physical review B, vol. 96, no. 6, 060202(R). https://doi.org/10.1103/PhysRevB.96.060202

APA

Lezama, T. L. M., Bera, S., Schomerus, H. U., Heidrich-Meisner, F., & Bardarson, J. H. (2017). One-particle density matrix occupation spectrum of many-body localized states after a global quench. Physical review B, 96(6), [060202(R)]. https://doi.org/10.1103/PhysRevB.96.060202

Vancouver

Lezama TLM, Bera S, Schomerus HU, Heidrich-Meisner F, Bardarson JH. One-particle density matrix occupation spectrum of many-body localized states after a global quench. Physical review B. 2017 Aug 23;96(6). 060202(R). https://doi.org/10.1103/PhysRevB.96.060202

Author

Lezama, Talía L. M. ; Bera, Soumya ; Schomerus, Henning Ulrich ; Heidrich-Meisner, Fabian ; Bardarson, Jens H. / One-particle density matrix occupation spectrum of many-body localized states after a global quench. In: Physical review B. 2017 ; Vol. 96, No. 6.

Bibtex

@article{112501994f18456aa2124f1f05ac49c2,
title = "One-particle density matrix occupation spectrum of many-body localized states after a global quench",
abstract = "The emergent integrability of the many-body localized phase is naturally understood in terms of localized quasiparticles. As a result, the occupations of the one-particle density matrix in eigenstates show a Fermi-liquid-like discontinuity. Here, we show that in the steady state reached at long times after a global quench from a perfect density-wave state, this occupation discontinuity is absent, reminiscent of a Fermi liquid at a finite temperature, while the full occupation function remains strongly nonthermal. We discuss how one can understand this as a consequence of the local structure of the density-wave state and the resulting partial occupation of quasiparticles. This partial occupation can be controlled by tuning the initial state and can be described by an effective temperature.",
author = "Lezama, {Tal{\'i}a L. M.} and Soumya Bera and Schomerus, {Henning Ulrich} and Fabian Heidrich-Meisner and Bardarson, {Jens H.}",
note = "{\textcopyright}2017 American Physical Society",
year = "2017",
month = aug,
day = "23",
doi = "10.1103/PhysRevB.96.060202",
language = "English",
volume = "96",
journal = "Physical Review B: Condensed Matter and Materials Physics",
issn = "1098-0121",
publisher = "AMER PHYSICAL SOC",
number = "6",

}

RIS

TY - JOUR

T1 - One-particle density matrix occupation spectrum of many-body localized states after a global quench

AU - Lezama, Talía L. M.

AU - Bera, Soumya

AU - Schomerus, Henning Ulrich

AU - Heidrich-Meisner, Fabian

AU - Bardarson, Jens H.

N1 - ©2017 American Physical Society

PY - 2017/8/23

Y1 - 2017/8/23

N2 - The emergent integrability of the many-body localized phase is naturally understood in terms of localized quasiparticles. As a result, the occupations of the one-particle density matrix in eigenstates show a Fermi-liquid-like discontinuity. Here, we show that in the steady state reached at long times after a global quench from a perfect density-wave state, this occupation discontinuity is absent, reminiscent of a Fermi liquid at a finite temperature, while the full occupation function remains strongly nonthermal. We discuss how one can understand this as a consequence of the local structure of the density-wave state and the resulting partial occupation of quasiparticles. This partial occupation can be controlled by tuning the initial state and can be described by an effective temperature.

AB - The emergent integrability of the many-body localized phase is naturally understood in terms of localized quasiparticles. As a result, the occupations of the one-particle density matrix in eigenstates show a Fermi-liquid-like discontinuity. Here, we show that in the steady state reached at long times after a global quench from a perfect density-wave state, this occupation discontinuity is absent, reminiscent of a Fermi liquid at a finite temperature, while the full occupation function remains strongly nonthermal. We discuss how one can understand this as a consequence of the local structure of the density-wave state and the resulting partial occupation of quasiparticles. This partial occupation can be controlled by tuning the initial state and can be described by an effective temperature.

U2 - 10.1103/PhysRevB.96.060202

DO - 10.1103/PhysRevB.96.060202

M3 - Journal article

VL - 96

JO - Physical Review B: Condensed Matter and Materials Physics

JF - Physical Review B: Condensed Matter and Materials Physics

SN - 1098-0121

IS - 6

M1 - 060202(R)

ER -