My research interests are associated with the many-body quantum systems, such as atomic nuclei, atoms, molecules and atomic clusters. The great variety of quantum-mechanical phenomena that abound in these systems make them the unique laboratories for testing quantum mechanics, while their complexity poses an unprecedented challenge for the theory.

See various movies here

In particular my research interests concern:

Physics of cold atomic gases: superfluidity, thermodynamics, exotic phases, Bose-Einstein Condensation (BEC), physics of BEC-BCS crossover, dynamics of superfluid vortices, viscosity.

Physics of atomic nuclei: structure of atomic nuclei at extreme conditions: high angular momenta, exotic deformations, large mass numbers, large neutron to proton ratio.

Nuclear dynamics: fission & fusion, induced fission, low energy reactions.

Neutron stars: structure and stability issues, superfluid properties.

Concerning general theoretical issues related to quantum many body systems:
- Path Integral Monte Carlo approach to strongly correlated Fermi systems
- Density Functional Theory (static and time-dependent)
- Non-linear dynamics,  chaotic motion, semiclassical methods,
- Non-equilibrium statistical mechanics (transport theory)

My research requires usage of the fastest supercomputers in the world. Currently I have access to
the following machines:
- Titan (Oak Ridge National Laboratory, USA) - hybrid architecture: CPU+GPU, 20PFlops (ranked 1 on TOP500 when built)
- NERSC machines (USA): Edison and Cori (both CPU Cray machines)
- Okeanos: CPU Cray machine at Interdisciplinary Center for Mathematical and Computational Modelling
- Supercomputer at NCBJ Swierk Computing Center (CPU machine, about 500TFlops, ranked 155th on TOP500)
- TSUBAME at the GSIC Center at the Tokyo Institute of Technology - hybrid architecture: CPU+GPU (ranked 5th on TOP500 in 2011, 5.7PFlops)
- Piz Daint at Swiss National Supercomputing Centre - hybrid architecture: CPU + GPU (7.787 PFlops)
- HA-PACS at the University of Tsukuba, Japan - hybrid architecture: CPU+GPU
- DWARF at the Warsaw University of Technology - GPU cluster (our own machine, 33TFlops)

Current research interests (with links to talks in pdf):

• Cold and dilute atomic gases.
  
• Dynamics of superfluid systems far from equilibrium: vortex formation, interaction and dynamics (calculations by Jaguar (now became Titan))
  
• Casimir effect (fermionic Casimir energy).
• Neutron star structure.
• Computational issues: Schroedinger equation on the lattice
• Time dependent density functional theory for superfluid systems
• Induced fission of 240Pu (calculations by Titan)
  

MEDIA and POPULAR ARTICLES:

• A Truly 'Super' Fluid - PhysicsOrg.com 2006
  
• "Nowa zabawka fizyków" - miesięcznik Politechniki Warszawskiej (in Polish) 2010
  
• "Physicists Hit On Mathematical Description of Superfluid Dynamics" - Science Daily, 2011 
• "Modeling the Bizarre: Quantum Superfluids" - PNNL, US Department of Energy
• "Naukowy rekord Guinnessa" - miesięcznik Politechniki Warszawskiej (in Polish) 2011
• "Fission Takes Its Time" -  Physics - spotlighting exceptional research (2016)
• "Znaczące osiągnięcie dla energetyki jądrowej z udziałem PW" (2016)
• "Najpotężniejszy superkomputer na świecie wykonał symulację rozszczepienia jądra atomowego" - artykuł w Gazecie Wyborczej (2016)
• "A Slow Separation" - PNNL, US Department of Energy (2016)
  
• "Novel model illustrates the finer details of nuclear fission" - PhysOrg.com (2016)
• Polscy naukowcy korzystają z największego superkomputera w Europie (ICM - aktualności)
• Superobliczenia fizyków PW na superkomputerze (PW - aktualności)
• Tiniest Superfluid Circuit in Nature (APS Physics)
• Od odkrycia nadciekłości do kwantowej turbulencji - artykuł popularny (Postępy Fizyki 73, 2022)