NUQG
From HP-SEE Wiki
Contents |
General Information
- Application's name: Numerical study of ultra-cold quantum gases (NUQG)
- Virtual Research Community: Computational Physics
- Scientific contact: Antun Balaz (antun at ipb.ac.rs)
- Technical contact: Antun Balaz (antun at ipb.ac.rs)
- Developers: Scientific Computing Laboratory, Institute of Physics Belgrade, Serbia
- Web site: http://www.scl.rs/
Short Description
The behavior of atoms at low temperatures is a research field that attracted a lot of attention after experimental realization of Bose-Einstein condensation in 1995. and several Nobel prizes for this discovery and associated effort related to cooling techniques able to produce quantum gases at temperatures as low as 50 nK. Macroscopic quantum phenomena (Bose-Einstein condensation, superfluidity, superconductivity) are now extensively studied experimentally, and numerical simulations have become an essential tool to understanding such strongly correlated systems. In the past several years optical lattices have also attracted much research interest due to tunable nature of the parameter space, allowing in-situ studies of the behavior that was previously inaccessible in the condensed matter physics. The recently introduced effective action approach by the path integral group of the Scientific Computing Laboratory of the Institute of Physics Belgrade provides an ideal framework for numerical study of Bose-Einstein condensation and response of the condensate to rotation, vortex formation and evolution in the rotating condensate, the study of the parametric resonance in the collective modes of the condensate due to the modulation of the interaction using the Feshbach resonance, and effects of disorder to global and local properties and dynamics of Bose-Einstein condensates.
NUQG application requires HPC resources due to several reasons: exact diagonalization of large systems, requiring excessive amounts of memory; tightly-coupled large-scale computations of real-time dynamics, requiring significant amounts of computing power to process large initial conformations of systems of ultra-cold quantum gases; large-scale study of the effects of disorder, which require real-time dynamics calculation for the statistically significant ensemble of disordered potentials etc.
Problems Solved
Calculation of the ground state for ultra-cold quantum gases systems, calculation of global and local properties of Bose-Einstein condensates, real-time dynamics and formation of vortices, effects of disorder on Bose-Einstein condensation, study of Bose-glass quantum phase transition and its characterization.
Scientific and Social Impact
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Collaborations and Beneficiaries
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Technical Features and HP-SEE Implementation
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- Application tools and libraries: Enumerate (comma separated)
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- Storage space during a single run: Tobefilledin
- Long-term data storage: Tobefilledin
Usage Example
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Publications
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