L. Cao,1,2,a) V. Bolsinger,1,3 S. I. Mistakidis,1 G. M. Koutentakis,1,3 S. Kronke,1,3
J. M. Schurer,1,3 and P. Schmelcher1,3,b)
1 Zentrum fur Optische Quantentechnologien, Universitat Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
2 Ministry of Education Key Laboratory of Fundamental Physical Quantities Measurements, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
3 The Hamburg Centre for Ultrafast Imaging, Universit¨at Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
(Received 12 April 2017; accepted 20 June 2017; published online 26 July 2017)
We extent the recently developed Multi-Layer Multi-Configuration Time-Dependent Hartree method for Bosons for simulating the correlated quantum dynamics of bosonic mixtures to the fermionic sector and establish a unifying approach for the investigation of the correlated quantum dynamics of a mixture of indistinguishable particles, be it fermions or bosons. Relying on a multi-layer wavefunction expansion, the resulting Multi-Layer Multi-Configuration Time-Dependent Hartree method for Mixtures (ML-MCTDHX) can be adapted to efficiently resolve system-specific intra- and interspecies correlations. The versatility and efficiency of ML-MCTDHX are demonstrated by applying it to the problem of colliding few-atom mixtures of both Bose-Fermi and Fermi-Fermi types. Thereby, we elucidate the role of correlations in the transmission and reflection properties of the collisional events. In particular, we present examples where the reflection (transmission) at the other atomic species is a correlation-dominated effect, i.e., it is suppressed in the mean-field approximation. Published by AIP Publishing.
http://dx.doi.org/10.1063/1.4993512
