9 papers
Josephson Dynamics of a Bose-Einstein Condensate in an Accelerated Double Well Potential
Aranya B Bhattacherjee
Motivated by recent experiment on Bloch Oscillation of Bose-Einstein condensates (BEC) in accelerated optical lattices, we consider the Josephson dynamics of a BEC in an accelerate…
A Model for Quark-Gluon Plasma with Pentaquark Baryons and Tetraquark Mesons
R. S. Kaushal
With a view to exploring a new kind of phase transition in the process of hadronization of quark-gluon plasma (QGP) we investigate the occurrence of pentaquark baryons and tetraqua…
A Comparative Study of Two Models of QGP-Fireball Formation
R. Ramanathan, Y. K. Mathur, K. K. Gupta +2
A Comparative study of the strengths and weakness of the models of fireball formation namely the statistical model of Ramanathan et.al (Physical Review C 70, 027903, 2004) and the…
Gain and Efficiency Enhancement in Free Electron Laser by Means of Modulated Electron Beam
Vivek Beniwal, Suresh C. Sharma, Satoshi Hamaguchi
Beam premodulation on free electron laser (FEL) offers considerable enhancement in gain and efficiency when the phase of the premodulated beam is -pi/2 and the beam is highly modul…
Quantum theory of vortex lattice state in a rotating Bose-Einstein condensate
Aranya B. Bhattacherjee
We study system of large number of singly quantized vortices in a rotating Bose-Einstein condensate. Analogous to the Meissner effect in superconductors, we show that the vector po…
A Simple Statistical Model for QGP Phenomenology
R. Ramanathan, Y. K. Mathur, K. K. Gupta +1
We propose a simple statistical model for the density of states for quarks and gluons in a QGP droplet, making the Thomas-Fermi model of the atom and the Bethe-model for the nucleo…