Spectral structure and many-body dynamics of ultracold bosons in a double-well

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Spectral structure and many-body dynamics of ultracold bosons in a double-well. / Schäfer, Frank; Bastarrachea-Magnani, Miguel A.; Lode, Axel U.J.; de Parny, Laurent de Forges; Buchleitner, Andreas.

I: Entropy, Bind 22, Nr. 4, 382, 04.2020.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Schäfer, F, Bastarrachea-Magnani, MA, Lode, AUJ, de Parny, LDF & Buchleitner, A 2020, 'Spectral structure and many-body dynamics of ultracold bosons in a double-well', Entropy, bind 22, nr. 4, 382. https://doi.org/10.3390/E22040382

APA

Schäfer, F., Bastarrachea-Magnani, M. A., Lode, A. U. J., de Parny, L. D. F., & Buchleitner, A. (2020). Spectral structure and many-body dynamics of ultracold bosons in a double-well. Entropy, 22(4), [382]. https://doi.org/10.3390/E22040382

CBE

Schäfer F, Bastarrachea-Magnani MA, Lode AUJ, de Parny LDF, Buchleitner A. 2020. Spectral structure and many-body dynamics of ultracold bosons in a double-well. Entropy. 22(4):Article 382. https://doi.org/10.3390/E22040382

MLA

Vancouver

Schäfer F, Bastarrachea-Magnani MA, Lode AUJ, de Parny LDF, Buchleitner A. Spectral structure and many-body dynamics of ultracold bosons in a double-well. Entropy. 2020 apr;22(4). 382. https://doi.org/10.3390/E22040382

Author

Schäfer, Frank ; Bastarrachea-Magnani, Miguel A. ; Lode, Axel U.J. ; de Parny, Laurent de Forges ; Buchleitner, Andreas. / Spectral structure and many-body dynamics of ultracold bosons in a double-well. I: Entropy. 2020 ; Bind 22, Nr. 4.

Bibtex

@article{b77b3e5a85a4489a868758ef60311858,
title = "Spectral structure and many-body dynamics of ultracold bosons in a double-well",
abstract = "We examine the spectral structure and many-body dynamics of two and three repulsively interacting bosons trapped in a one-dimensional double-well, for variable barrier height, inter-particle interaction strength, and initial conditions. By exact diagonalization of the many-particle Hamiltonian, we specifically explore the dynamical behavior of the particles launched either at the single-particle ground state or saddle-point energy, in a time-independent potential. We complement these results by a characterization of the cross-over from diabatic to quasi-adiabatic evolution under finite-time switching of the potential barrier, via the associated time evolution of a single particle's von Neumann entropy. This is achieved with the help of the multiconfigurational time-dependent Hartree method for indistinguishable particles (MCTDH-X)-which also allows us to extrapolate our results for increasing particle numbers.",
keywords = "Bose-Einstein condensates in periodic potentials, Bosonic systems, Tunneling and josephson effect, Ultracold atomic gases",
author = "Frank Sch{\"a}fer and Bastarrachea-Magnani, {Miguel A.} and Lode, {Axel U.J.} and {de Parny}, {Laurent de Forges} and Andreas Buchleitner",
year = "2020",
month = apr,
doi = "10.3390/E22040382",
language = "English",
volume = "22",
journal = "Entropy",
issn = "1099-4300",
publisher = "MDPI AG",
number = "4",

}

RIS

TY - JOUR

T1 - Spectral structure and many-body dynamics of ultracold bosons in a double-well

AU - Schäfer, Frank

AU - Bastarrachea-Magnani, Miguel A.

AU - Lode, Axel U.J.

AU - de Parny, Laurent de Forges

AU - Buchleitner, Andreas

PY - 2020/4

Y1 - 2020/4

N2 - We examine the spectral structure and many-body dynamics of two and three repulsively interacting bosons trapped in a one-dimensional double-well, for variable barrier height, inter-particle interaction strength, and initial conditions. By exact diagonalization of the many-particle Hamiltonian, we specifically explore the dynamical behavior of the particles launched either at the single-particle ground state or saddle-point energy, in a time-independent potential. We complement these results by a characterization of the cross-over from diabatic to quasi-adiabatic evolution under finite-time switching of the potential barrier, via the associated time evolution of a single particle's von Neumann entropy. This is achieved with the help of the multiconfigurational time-dependent Hartree method for indistinguishable particles (MCTDH-X)-which also allows us to extrapolate our results for increasing particle numbers.

AB - We examine the spectral structure and many-body dynamics of two and three repulsively interacting bosons trapped in a one-dimensional double-well, for variable barrier height, inter-particle interaction strength, and initial conditions. By exact diagonalization of the many-particle Hamiltonian, we specifically explore the dynamical behavior of the particles launched either at the single-particle ground state or saddle-point energy, in a time-independent potential. We complement these results by a characterization of the cross-over from diabatic to quasi-adiabatic evolution under finite-time switching of the potential barrier, via the associated time evolution of a single particle's von Neumann entropy. This is achieved with the help of the multiconfigurational time-dependent Hartree method for indistinguishable particles (MCTDH-X)-which also allows us to extrapolate our results for increasing particle numbers.

KW - Bose-Einstein condensates in periodic potentials

KW - Bosonic systems

KW - Tunneling and josephson effect

KW - Ultracold atomic gases

UR - http://www.scopus.com/inward/record.url?scp=85086663797&partnerID=8YFLogxK

U2 - 10.3390/E22040382

DO - 10.3390/E22040382

M3 - Journal article

AN - SCOPUS:85086663797

VL - 22

JO - Entropy

JF - Entropy

SN - 1099-4300

IS - 4

M1 - 382

ER -