Abril 27, 2023
11:00 am
Quantum chaos in strongly correlated Bose-Bose mixtures
Where and when
Date
Abril 27, 2023
11:00 am
Location
Seminar room. Department of Optics. Physics Faculty. (Building D)
Featured speakers
Tai Tran Duong Anh
PhD Student
Read bio
Currently, Tai Tran is a PhD student supervised by Prof. Thomas Busch at the Okinawa Institute of Science and Technology in Japan. His research mainly focuses on quantum chaos, and non-equilibrium many-body quantum dynamics of strongly correlated mixtures of ultracold gases. Additionally, He has developed MATLAB software that implements an improved Exact Diagonalization algorithm to solve the many-body Schrödinger equation for indistinguishable particles. Besides investigating mixtures of ultracold quantum gases, He is also interested in non-linear phenomena produced by interactions between noble atoms and intense lasers.
Quantum chaos plays a vital role in understanding fundamental questions in several areas of physics. The appearance of chaotic quantum dynamics significantly depends on the symmetry properties of the system, and in ultracold atomic systems, many of these can be experimentally controlled. In this work, we systematically study the emergence of quantum chaos in a minimal system describing one-dimensional harmonically trapped Bose-Bose mixtures by tuning the particle-particle interactions. We numerically examine the transition from integrability to chaos when the inter-component interaction changes from weak to strong by analyzing the eigenstate structures and the distribution of the matrix elements of observables in terms of the eigenstate thermalization hypothesis and their dynamics. We show that one can obtain strong signatures of chaos by increasing the inter-component interaction strength and breaking the symmetry of intra-component interactions.
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