FOMO2021 Abstracts

Hainge, Joshua — Caustics versus chaos in a kicked Bose-Einstein condensate

We numerically study the quantum dynamics a bosonic Josephson junction (a Bose-Einstein condensate in a double-well potential) in the context of random periodic driving of the tunnel coupling.  In particular, we examine how caustics which dominate the wavefunction in Fock space of the undriven system are affected by kicks which are random in both time and strength.  In the limit of weak tunnelling and low number imbalance, the system maps onto the kicked rotor (a paradigm for chaotic dynamics) and can display Anderson localization in momentum space.