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25th European Conference on Few-Body Problems in Physics

30 July 2023 to 4 August 2023
Alte Mensa
Europe/Berlin timezone

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Session

Monday Parallel Session: Unitary/Boson Systems (AudiMax)

31 Jul 2023, 14:50
AudiMax (Alte Mensa)

AudiMax

Alte Mensa

Johann-Joachim-Becher-Weg 3, 55128 Mainz

Conveners

Monday Parallel Session: Unitary/Boson Systems (AudiMax)

  • Chen Ji (Central China Normal University)

Presentation materials

There are no materials yet.

  1. 140. Unraveling Universal Correlations: Gaussian Characterization of Systems Near the Unitary Limit
    Mario Gattobigio (Université Côte d'Azur - Institut de Physique de Nice)
    31/07/2023, 14:50
    Invited Talk

    In this talk, we present a summary of our recent research results on describing systems near the unitary limit using simple potentials, specifically Gaussian potentials[1-5].

    In the parameter region where the energy of either the two-particle bound state or the virtual state is small, the physics can be effectively described by the scattering length and the effective range alone. Different...

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  2. 6. Universality in low-dimensional three-body systems
    Prof. Maxim Efremov (German Aerospace Center (DLR), Institute of Quantum Technologies)
    31/07/2023, 15:15
    Contributed Talk

    We study a heavy–heavy–light three-body system confined to one or two space dimensions. Both the binding energies and corresponding wave functions are obtained for (i) no heavy-heavy interaction and (ii) a finite-range heavy-light interaction potential. We demonstrate that when the two-body ground-state energy approaches zero, the three-body bound states display a universal behavior,...

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  3. 112. Unitary interaction geometries in few-body systems
    Johannes Kirscher (SRM University AP)
    31/07/2023, 15:30
    Contributed Talk

    We present an analysis of systems of up to 5 particles which are characterized by a subset of resonantly interacting pairs. The focus is on the renormalization-group (RG) behaviour of the 3-, 4-, and 5-body, equal-mass ground states. The RG/scaling behaviour is studied as a function of the various possibilities to bind the respective systems with resonant pair interactions.
    Based on numerical...

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  4. 147. Dynamical vortex production and quantum turbulence in perturbed Bose-Einstein condensates
    Prof. Lauro Tomio (Instituto de Fisica Teorica, Universidade Estadual Paulista)
    31/07/2023, 15:45
    Contributed Talk

    We report investigations on dynamical vortex production and quantum turbulence emerging in periodic perturbed Bose-Einstein condensates, considering binary coupled mass-imbalanced systems, submitted to a stirring time-dependent perturbation. We also present some preliminary results on the case of dipolar single-atom systems under time-dependent periodic Gaussian perturbations.

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  5. 39. Discrete scale-invariant boson-fermion duality in one dimension
    Prof. Satoshi Ohya (Nihon University)
    31/07/2023, 16:00
    Contributed Talk

    In this talk, I discuss discrete scale invariance in one-dimensional many-body problems of identical particles. I first classify all possible scale-invariant two-body contact interactions that respect unitarity, Galilean invariance, permutation invariance, and translation invariance in one dimension. By using these contact interactions, I then construct models of $n(\geq3)$ identical particles...

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