Adhikari, S. K., Salasnich, L.
In the case of tight transverse confinement (cigar-shaped trap) the three-dimensional (3D) nonlinear Schr\"odinger equation, describing superfluid Fermi atoms at unitarity (infinite scattering length...
Superfluid Bose-Fermi mixture from weak-coupling to unitarity (2008)
Adhikari, S. K., Salasnich, Luca
We investigate the zero-temperature properties of a superfluid Bose-Fermi mixture by introducing a set of coupled Galilei-invariant nonlinear Schr\"odinger equations valid from weak-coupling to...
Gap solitons in a model of a superfluid fermion gas in optical lattices (2008)
Adhikari, S. K., Malomed, B. A.
We consider a dynamical model for a Fermi gas in the Bardeen-Cooper-Schrieffer (BCS) superfluid state, trapped in a combination of a 1D or 2D optical lattice (OL) and a tight parabolic potential...
Semi-classical scattering in two dimensions (2008)
Adhikari, S. K., Hussein, M. S.
The semi-classical limit of quantum-mechanical scattering in two dimensions (2D) is developed. We derive the Wentzel-Kramers-Brillouin and Eikonal results for 2D scattering. No backward or forward...
Nonlinear Schr\"odinger equation for a superfluid Fermi gas from BCS to Bose crossover (2008)
We introduce a quasi-analytic nonlinear Schr\"odinger equation with beyond mean-field corrections to describe the dynamics of a zero-temperature dilute superfluid Fermi gas in the crossover from the...
Josephson oscillation of a superfluid Fermi gas (2008)
Using the complete numerical solution of a time-dependent three-dimensional mean-field model we study the Josephson oscillation of a superfluid Fermi gas (SFG) at zero temperature formed in a...
Tightly bound gap solitons in a Fermi gas (2008)
Adhikari, S. K., Malomed, B. A.
Within the framework of the mean-field-hydrodynamic model of a degenerate Fermi gas (DFG), we study, by means of numerical methods and variational approximation (VA), the formation of fundamental gap...
The Effect of Recent Venus Transit on Earth’s Atmosphere (2006)
De, S. S., De, B. K., Adhikari, S. K., Sarkar, B. K., Sarkar, S. K., Guha, A., ...
Some experiments on June 8, 2004, the day of transit of Venus across the Sun, were undertaken at Kolkata (latitude: 23034 N) to observe effect, if any, of transit of Venus on FWF, ELF and VLF...
The Effect of Recent Venus Transit on Earth’s Atmosphere (2006)
De, S. S.; Centre Of Advanced Study In Radio Physics And Electronics, University Of Calcutta,, De, B. K.; Department Of Physics, Tripura University, Agartala 799 130, India., Adhikari, S. K.; Centre Of Advanced Study In Radio Physics And Electronics, University Of Calcutta,, Sarkar, B. K.; Centre Of Advanced Study In Radio Physics And Electronics, University Of Calcutta,, Sarkar, S. K.; Department Of Physics, University Of Calcutta, Kolkata 700 009, India., Guha, A.; Centre Of Advanced Study In Radio Physics And Electronics, University Of Calcutta,, ...
Some experiments on June 8, 2004, the day of transit of Venus across the Sun, were undertaken at Kolkata (latitude: 23034 N) to observe effect, if any, of transit of Venus on FWF, ELF and VLF...
The effect of recent Venus transit on Earth’s atmosphere (2006)
De, S. S.; Centre Of Advanced Study In Radio Physics And Electronics, University Of Calcutta, Kolkata, India, De, B. K.; Department Of Physics, Tripura University, Agartala, India, Adhikari, S. K.; Centre Of Advanced Study In Radio Physics And Electronics, University Of Calcutta, Kolkata, India, Sarkar, B. K.; Centre Of Advanced Study In Radio Physics And Electronics, University Of Calcutta, Kolkata, India, Sarkar, S. K.; Department Of Physics, University Of Calcutta, Kolkata, India, Guha, A.; Centre Of Advanced Study In Radio Physics And Electronics, University Of Calcutta, Kolkata, India, ...
Some experiments on June 8, 2004, the day of transit of Venus across the Sun, were undertaken at Kolkata (latitude: 22°34lN) to observe the effect, if any, of transit of Venus on FWF, ELF and VLF...
The BCS-Bose Crossover Theory (2005)
Adhikari, S. K., De Llano, M., Sevilla, F. J., Solis, M. A., Valencia, J. J.
We contrast {\it four} distinct versions of the BCS-Bose statistical crossover theory according to the form assumed for the electron-number equation that accompanies the BCS gap equation. The four...
Linear to quadratic crossover of Cooper pair dispersion relation (2000)
Adhikari, S. K., Casas, M., Puente, A., Rigo, A., Fortes, M., Solis, M. A., ...
Cooper pairing is studied in three dimensions to determine its binding energy for all coupling using a general separable interfermion interaction. Also considered are Cooper pairs (CPs) with nonzero...
Cooper pair dispersion relation for weak to strong coupling (2000)
Adhikari, S. K., Casas, M., Puente, A., Rigo, A., Fortes, M., Solís, M. A., ...
Cooper pairing in two dimensions is analyzed with a set of renormalized equations to determine its binding energy for any fermion number density and all coupling assuming a generic pairwise residual...
Superconductivity as a Bose-Einstein condensation? (2000)
Adhikari, S. K., Casas, M., Puente, A., Rigo, A., Fortes, M., Solís, M. A., ...
Bose-Einstein condensation (BEC) in two dimensions (2D) (e.g., to describe the quasi-2D cuprates) is suggested as the possible mechanism widely believed to underlie superconductivity in general. A...
Cooper pair dispersion relation in two dimensions (2000)
Adhikari, S. K., Casas, M., Puente, A., Rigo, A., Fortes, M., Solís, M. A., ...
The Cooper pair binding energy {\it vs.} center-of-mass-momentum dispersion relation for Bose-Einstein condensation studies of superconductivity is found in two dimensions for a renormalized...
Application of Renormalization to Potential Scattering (1997)
De Araujo, C. F., Tomio, L., Adhikari, S. K., Frederico, T.
A recently proposed renormalization scheme can be used to deal with nonrelativistic potential scattering exhibiting ultraviolet divergence in momentum space. A numerical application of this scheme is...
Application of renormalization to potential scattering (1997)
D'Araújo, C F, Tomio, L, Adhikari, S K, Frederico, T
A recently proposed renormalization scheme can be used to deal with nonrelativistic potential scattering exhibiting ultraviolet divergence in momentum space. A numerical application of this scheme is...
Lattice discretization in quantum scattering (1996)
Adhikari, S K, Frederico, T, Marinho, R M
The utility of lattice discretization technique is demonstrated for solving nonrelativistic quantum scattering problems and specially for the treatment of ultraviolet divergences in these problems...