Exploring Many-Body Physics with Bose-Einstein Condensates

O. E. Alon, V. S. Bagnato, R. Beinke, S. Basu, L. S. Cederbaum, B. Chakrabarti, B. Chatterjee, R. Chitra, F. S. Diorico, S. Dutta, L. Exl, A. Gammal, S. K. Haldar, S. Klaiman, C. Lévêque, R. Lin, N. J. Mauser, P. Molignini, L. Papariello, R. RoyK. Sakmann, A. I. Streltsov, G. D. Telles, M. C. Tsatsos, R. Wu, A. U. J. Lode, Wolfgang E. Nagel (Editor), Dietmar H. Kröner (Editor), Michael M. Resch (Editor)

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


Bose-Einstein condensates (BECs) offer a fruitful, often uncharted ground for exploring physics of many-particle systems. In the present year of the MCTDHB project at the HLRS, we maintained and extended our investigations of BECs and interacting bosonic systems using the MultiConfigurational Time-Dependent Hartree for Bosons (MCTDHB) method and running the MCTDHB and MCTDH-X software packages on the Cray XC40 system Hazel Hen. The results we disseminate within this report comprise: (i) Entropies and correlations of ultracold bosons in a lattice; (ii) Crystallization of bosons with dipole-dipole interactions and its detection in single-shot images; (iii) Management of correlations in ultracold gases; (iv) Pulverizing a BEC; (v) Dynamical pulsation of ultracold droplet crystals by laser light; (vi) Two-component bosons interacting with photons in a cavity; (vii) Quantum dynamics of a bosonic Josephson junction and the impact of the range of the interaction; (viii) Trapped bosons in the infinite-particle limit and their exact many-body wavefunction and properties; (ix) Angular-momentum conservation in a BEC and Gross-Pitaevskii versus many-body dynamics; (x) Variance of an anisotropic BEC; and (xi) excitation spectrum of a weakly-interacting rotating BEC showing enhanced many-body effects. These are all basic and appealing, sometimes unexpected many-body results put forward with the generous allocation of computer time by the HLRS to the MCTDHB project. Finally, expected future developments and research tasks are prescribed, too.
Original languageEnglish
Title of host publicationHigh Performance Computing in Science and Engineering '18
Subtitle of host publicationTransactions of the High Performance Computing Center, Stuttgart (HLRS) 2018
EditorsW. E. Nagel, D. H. Kröner, M. M. Resch
PublisherSpringer Nature Switzerland AG
Number of pages22
ISBN (Print)978-3-030-13327-6
StatePublished - 2019


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