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Article
Many-body chemical reactions in a quantum degenerate gas
Chemical reactions in the quantum degenerate regime are described by the mixing of matter-wave fields. In many-body reactions involving bosonic reactants and products, such as coupled atomic and molecular Bose...
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Article
Atomic Bose–Einstein condensate in twisted-bilayer optical lattices
Observation of strong correlations and superconductivity in twisted-bilayer graphene1–4 has stimulated tremendous interest in fundamental and applied physics5–8. In this system, the superposition of two twisted h...
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Article
Domain-wall dynamics in Bose–Einstein condensates with synthetic gauge fields
Interactions in many-body physical systems, from condensed matter to high-energy physics, lead to the emergence of exotic particles. Examples are mesons in quantum chromodynamics and composite fermions in frac...
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Article
Transition from an atomic to a molecular Bose–Einstein condensate
Molecular quantum gases (that is, ultracold and dense molecular gases) have many potential applications, including quantum control of chemical reactions, precision measurements, quantum simulation and quantum ...
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Article
Pattern formation in a driven Bose–Einstein condensate
Pattern formation is ubiquitous in nature at all scales, from morphogenesis and cloud formation to galaxy filamentation. How patterns emerge in a homogeneous system is a fundamental question across interdiscip...
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Article
Engaged in gauge theory
Two independent cold-atom experiments have demonstrated the building blocks for the quantum simulation of dynamical gauge fields — an advance that holds promise for our understanding of computationally intract...
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Article
Quantum simulation of Unruh radiation
The exploration of quantum phenomena in a curved spacetime is an emerging interdisciplinary area at the interface between general relativity1–4, thermodynamics4–6 and quantum information7,8. One famous prediction...
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Article
Observation of fermion-mediated interactions between bosonic atoms
In high-energy and condensed-matter physics, particle exchange has an essential role in the understanding of long-range interactions and correlations. For example, the exchange of massive bosons leads to the Y...
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Article
Coherent inflationary dynamics for Bose–Einstein condensates crossing a quantum critical point
Quantum phase transitions, transitions between many-body ground states, are of extensive interest in research ranging from condensed-matter physics to cosmology 1–4 . Key featu...
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Article
Influence of a Large-Eddy-Breakup-Device on the Turbulent Interface of Boundary Layers
The effects of implementing a large-eddy break-up device (LEBU) in a turbulent boundary layer on the interaction with the boundary layer is investigated with particular emphasis on the turbulent/non-turbulent ...
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Article
Collective emission of matter-wave jets from driven Bose–Einstein condensates
Sufficiently strong modulation of the interaction strength in a Bose–Einstein condensate induces inelastic atom–atom scattering and causes collective emission of matter-wave jets from the condensate.
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Testing universality of Efimov physics across broad and narrow Feshbach resonances
The emergence of Efimov states in ultracold atomic systems is expected to have a universal behaviour, but a new experimental study defies this expectation, reporting a clear deviation around a narrow Feshbach ...
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Article
Open AccessNumerical and experimental investigations of the flow–pressure relation in multiple sequential stenoses coronary artery
Virtual fractional flow reserve (vFFR) has been evaluated as an adjunct to invasive fractional flow reserve (FFR) in the light of its operational and economic benefits. The accuracy of vFFR and the complexity ...
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Article
Simulation of a Large-Eddy-Break-up Device (LEBU) in a Moderate Reynolds Number Turbulent Boundary Layer
A well-resolved large eddy simulation (LES) of a large-eddy break-up (LEBU) device in a spatially evolving turbulent boundary layer is performed with, Reynolds number, based on free-stream velocity and momentu...
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Article
On Large-Scale Friction Control in Turbulent Wall Flow in Low Reynolds Number Channels
The present study reconsiders the control scheme proposed by Schoppa & Hussain (Phys. Fluids 10, 1049–1051 1998), using a new set of numerical simulations. The computations are performed in a turbulent channel at...
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Article
An investigation of channel flow with a smooth air–water interface
Experiments and numerical simulation are used to investigate fully developed laminar and turbulent channel flow with an air–water interface as the lower boundary condition. Laser Doppler velocimetry measuremen...
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Article
Bound to be universal?
Three papers published in Nature Physics in 2009 revealed the intriguing three- and four-body bound states arising from the predictions by Vitaly Efimov nearly half a century ago. But some of these findings conti...
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Article
Direct observation of effective ferromagnetic domains of cold atoms in a shaken optical lattice
Ultracold atoms in optical lattices are used to study various phenomena in condensed-matter physics, such as magnetism. A lattice-shaking technique can induce a strong effective spin-interaction, leading to th...
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Article
Modeling and testing of hydrodynamic dam** model for a complex-shaped remotely-operated vehicle for control
In this paper, numerical modeling and model testing of a complex-shaped remotely-operated vehicle (ROV) were shown. The paper emphasized the systematic modeling of hydrodynamic dam** using the computational ...
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Article
Observation of scale invariance and universality in two-dimensional Bose gases
The Berezinskii–Kosterlitz–Thouless phase transition, occurring in two-dimensional Bose gases, is expected to show an extended range of universal scaling behaviour in thermodynamic quantities. A clear demonstr...
