[institut] [phys4phys] SCL online seminar: Tommaso Macri, Thursday, 25 November, 14:00

[Antun Balaz]

Dear colleagues,

You are cordially invited to the SCL online seminar of the Center for the Study of Complex Systems, which will be held on Thursday, 25 November 2021 at 14:00 on Zoom (link is given below). The talk entitled

Solitons and polarons in ultracold bosonic mixtures

will be given by Dr. Tommaso Macri (Department of Theoretical and Experimental Physics, Federal University of Rio Grande do Norte, Natal, Brazil). Abstract of the talk:

The realization of multicomponent systems offers a natural playground to observe nonequilibrium effects in a more general framework. Restricting to two-component BECs, one notices already a rich variety of phases in the ground state. In purely repulsive mixtures, one observes a homogeneous superfluid or a phase separation when inter-species repulsion overcomes the intra-species interaction strength. In the attractive regime a series of recent experiments showed the formation of dilute self-bound droplet states in a two-component BEC both in a tight optical waveguide and in free space, closely following the theoretical predictions. In the quasi one-dimensional geometry, upon varying the mean-field interaction from the weakly to the strongly attractive regime, one observes a smooth crossover between bright soliton states and self-bound droplets. In the first part of this talk we will investigate the quench dynamics of a two component Bose mixture and study the onset of modulational instability, which leads the system far from equilibrium. Analogous to the single-component counterpart, this phenomenon results in the creation of trains of bright solitons. In the second part we will discuss the properties of impurities in uniform and self-bound states of heteronuclear mixtures inspired by recent experiments. Finally, we will focus on the formation of exotic bound states for an impurity interacting with a self-bound droplet.

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Time: Nov 25, 2021 14:00 Belgrade
https://us02web.zoom.us/j/81381005164?pwd=U1BpcW5RNXgvdkh1ZmgzU1VjWnVGQT09

Meeting ID: 813 8100 5164
Passcode: 667308
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Best regards,
Antun Balaž

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Dr. Antun Balaž
Research Professor

http://www.scl.rs/antun
Phone: +381 11 3713152
Fax: +381 11 3162190

Scientific Computing Laboratory
Center for the Study of Complex Systems

Institute of Physics Belgrade
National Institute of the Republic of Serbia
Pregrevica 118, 11080 Belgrade, Serbia
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