The MCQST Colloquium Series features interdisciplinary talks given by visiting international speakers. The monthly colloquium covers topics spanning all MCQST research units and will be broadcast live via Zoom for audiences worldwide. The main goal of the series is to create the framework for idea exchange, to strengthen links with QST leading groups worldwide, as well as to act as an integral part of the local educational environment.

MCQST Colloquium: Zoran Hadzibabic

We are excited to invite you to the colloquium talk by Zoran Hadzibabic (University of Cambridge, UK).

Agenda

14:00 | Teaser talk by Si Wang on "A New Type of Off-Diagonal Long-Range Order: Observing Strong-to-Weak Spontaneous Symmetry Breaking in a Dephased Fermi Gas"

14:15 | Coffee break

14:30 | Colloquium talk by Zoran Hadzibabic on “Far-from-equilibrium emergence of order in homogeneous Bose gases”

Far-from-equilibrium emergence of order in homogeneous Bose gases

Relaxation and condensation of an isolated low-energy Bose gas provide an ideal setting for the study of universal features of far-from-equilibrium many-body dynamics and the emergence of long-range order, still open problems that are relevant from subnuclear to cosmological lengthscales.

In this colloquium, I will give an overview of our recent experiments on the emergence of order in homogeneous Bose gases, produced in optical box traps. Using complementary experimental probes, we have developed a comprehensive picture that connects different theoretical points of view, including the modern theory of nonthermal fixed points and the traditional theories of turbulence [1-4].

[1] Universal coarsening in a homogeneous two-dimensional Bose gas, M. Gazo et al., Science 389, 802 (2025)

[2] A universal speed limit for spreading of coherence, G. Martirosyan et al., Nature 647, 608 (2025)

[3] Observation of Vinen turbulence during far-from-equilibrium Bose-Einstein condensation, S. J. Morris et al., arXiv:2604.28191 (2026)

[4] Weak wave turbulence as a precursor to universal coarsening in a homogeneous Bose gas, S. M. Fischer et al., arXiv:2605.22906 (2026)

About Zoran Hadzibabic

Zoran Hadzibabic is a Professor of Physics and a Fellow of Trinity College at the University of Cambridge. He was educated at Cambridge and MIT, and was a postdoctoral Chateaubriand and Marie Curie Fellow at the Ecole Normale Supérieure in Paris. He started his group at Cambridge in 2007.

He uses ultracold atomic gases to study fundamental many-body phenomena, including the Berezinskii-Kosterlitz-Thouless transition in 2D gases, phase-transition dynamics, turbulence in driven systems, universal ordering dynamics far from equilibrium, and massive relativistic fields described by the sine-Gordon model. A particular feature of his work is the use of optical box traps to study homogeneous quantum gases, which compared to the traditionally studied harmonically trapped samples offer closer connections to both many-body theories and other physical systems.

Join in-person or via Zoom

https://lmu-munich.zoom.us/j/69761439704
Meeting ID: 697 6143 9704, Passcode: mcqst2526