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Chaotic oscillation in attractive Bose-Einstein condensate under an impulsive force
Paulsamy Muruganandam, Sadhan K. Adhikari
For an attractive trapped Bose-Einstein condensate an imaginary three-body recombination loss term and an imaginary linear source term are usually included in the Gross-Pitaevskii…
Stability and collapse of a coupled Bose-Einstein condensate
Sadhan K. Adhikari
The dynamics of a coupled Bose-Einstein condensate involving trapped atoms in two quantum states is studied using the time-dependent Gross-Pitaevskii equation including an interact…
Positronium scattering by atoms and molecules at low energies
Sadhan K. Adhikari
The recent theoretical and experimental activities in positronium (Ps) scattering by atoms and molecules are reviewed with special emphasis at low energies. We critically compare t…
Low-energy direct muon transfer from H to Ne, S and Ar using two-state close-coupling approximation to Faddeev-Hahn-type equation
Renat A. Sultanov, Sadhan K. Adhikari
We perform three-body calculation of direct muon-transfer rates from thermalized muonic hydrogen isotopes to bare nuclei Ne, S, and Ar employing integro-dif…
Free expansion of attractive and repulsive Bose-Einstein condensed vortex states
Sadhan K. Adhikari
Free expansion of attractive and repulsive Bose-Einstein condensed vortex states formed in an axially symmetric trap is investigated using the numerical solution of the time-depend…
Positronium-positronium interaction: Resonance, scattering length, and Bose-Einstein condensation
Sadhan K. Adhikari
The low-energy scattering of ortho positronium (Ps) by ortho Ps has been studied in a full quantum mechanical coupled-channel approach. In the singlet channel (total spin )…