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Open Quantum Systems Decoherence Quantum Simulation

Many-body excitation spectra of trapped bosons with general interaction by linear response

arXiv
Authors: Ofir E. Alon

Year

2014

Paper ID

48366

Status

Preprint

Abstract Read

~2 min

Abstract Words

87

Citations

N/A

Abstract

The linear-response theory of the multiconfigurational time-dependent Hartree for bosons method for computing many-body excitations of trapped Bose-Einstein condensates \[Phys. Rev. A {\bf 88}, 023606 (2013)\] is implemented for systems with general interparticle interaction. Illustrative numerical examples for repulsive and attractive bosons are provided. The many-body linear-response theory identifies the excitations not unraveled within Bogoliubov--de Gennes equations. The theory is herewith benchmarked against the exactly-solvable one-dimensional harmonic-interaction model. As a complementary result, we represent the theory in a compact block-diagonal form, opening up thereby an avenue for treating larger systems.

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  • The linear-response theory of the multiconfigurational time-dependent Hartree for bosons method for computing many-body excitations of trapped Bose-Einstein condensates [Phys.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1407.7678 [2] arXiv https://arxiv.org/abs/1407.7678 [3] Publisher https://arxiv.org/abs/1407.7678

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