A5037442690- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Black Holes and Theoretical Physics
- Cosmology and Gravitation Theories
- Cold Atom Physics and Bose-Einstein Condensates
- Nuclear physics research studies
- Scientific Research and Discoveries
- Advanced Mathematical Theories and Applications
- Statistical Mechanics and Entropy
- Theoretical and Computational Physics
- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Quantum, superfluid, helium dynamics
- Computational Physics and Python Applications
- Quantum chaos and dynamical systems
- Dark Matter and Cosmic Phenomena
- Relativity and Gravitational Theory
- Quantum and Classical Electrodynamics
- Astrophysics and Cosmic Phenomena
- High-pressure geophysics and materials
- Neutrino Physics Research
- Pulsars and Gravitational Waves Research
- Advanced Chemical Physics Studies
- Matrix Theory and Algorithms
Adamas University
2020-2022
Jadavpur University
2005-2020
Norwegian Womens Public Health Association
2004
Murshidabad Medical College and Hospital
2003-2004
University of Calcutta
1967
Calculation of the 2+ resonance state 6He in a three-body model (4He + n n) is done by adopting novel theoretical technique. The effective potential for obtained using hyperspherical harmonics and it presents shallow well followed low wide barrier. Numerical diffculties present calculation energy such well–barrier combination are overcome construction one-parameter (λ) isospectral having bound continuum. This develops deep high barrier small positive values λ. effectively traps system sharp...
The binding energies of di- hadronic states have been calculated assuming a 'molecular' interaction provided by the asymptotic expression residual confined gluon exchange potential between component hadrons in system. Meson- meson and meson- baryon studied detail mass formula has used to calculate total 'molecules'.
The strange contribution to the proton magnetic moment is investigated assuming a uuds$\overline{s}$ configuration for in context of quasiparticle diquark model. and mass octet pentaquark baryons are also considering diquark-diquark-antiquark scheme. results found be agreement with existing theoretical experimental predictions.
The Fermi momentum P f for the B c meson has been estimated in framework of statistical model. matrix element |V cb | extracted from lepton energy spectrum using value momentum, ACCMM as =1.14 GeV which is somewhat large compared to existing estimates.
Using the analogy of a well-known mathematical formalism, an analytical form probability density hadron as quarkonium system has been suggested which corresponds to that obtained from statistical model. The aforesaid prescription also offers necessary framework incorporate different orders approximations in it. Unlike all existing theoretical approaches, model reveals fractal characteristics hadron, like dimension D F , correlation C and anomalous A . direct physical bearings these...
The free energy analyzed in the framework of quantum field theory conjunction with statistical model for a [Formula: see text] meson is found to undergo an expansion condensate wave function. superconducting and fractal properties are originate from branch-cut type singularity function which gauge symmetry breaking manifest.
In the framework of quasiparticle approach, ground state mass heavy pentaquarks have been investigated in diquark–diquark–antiquark picture and higher states are loaded flux tube model where two light diquarks supposed to be linked by a quark. The Regge trajectories for studied. slope (α) these particles obtained as ≈1 GeV 2 which indicates that trajectory follows linearity conditions with universal value α (~ 1 ). doubly charm bottom baryons like [Formula: see text] also approach. results...
We propose a new technique to calculate the position and width of weak resonant states in weakly bound systems, using isospectral potentials. A potential is constructed which strictly with original one but has desirable properties make calculation resonance simpler more accurate. The usefulness method demonstrated by calculating first 1 + 6 Li , three-body cluster model for latter.
We study the non-equilibrium dynamics of a one-dimensional Bose gas with long-range interactions that decay as $(\frac{1}{r^{\alpha}})$ $(0.5 < \alpha <4.0$). investigate system when are suddenly switched from Tonks-Girardeau (TG) to super-Tonks-Girardeau (sTG) limit. find relaxation is achieved through complex intermediate demonstrated by violent fragmentation and chaotic delocalization. establish sTG exhibits classical gaseous characteristics an asymptotic state associated unbounded...
Recently CERN has discovered three new exotic particles in LHCb. The particle are $T_{cso}$ $(2900)^{++}$, a doubly charged tetraquark with quark configuration (csu$\overline{d}$), $(2900)^{0}$, neutral (cds$\overline{u}$) and pentaquark $P_{\psi s}$ $(4338)^{0}$ (c$\overline{c}$ uds) which is first observed strange its configuration. discovery of these subatomic exciting the nature interaction constituent quarks need to be understood for multiquark states. Diquark one most important...
A quasi particle model for the diquark is suggested in an analogy with crystal lattice. The magnetic moments of exotics and non exotic members baryon antidecuplet have been estimated considering diquark‐diquark‐ antiquark picture baryons. masses also estimated. results are found to be agreement existing theoretical experimental results.
The ratios of B and D meson decay constants also the double ratio (f s /f d )/(f ) have been calculated using variational method in conjunction with relativistic Hamiltonian heavy framework statistical model. Using six different potentials potential model, we obtained reliable results for them which are good agreement those lattice calculations.
Diquarks are described in the framework of composite fermion (CF) model quasi particle. The masses light  [Λ0, Σ-, Ξ-, Ω-], heavy [Λ+c, Λ0b, Σ+c, Σ0b, Ξ0c, Ξ0b, Ω0c, Ω-b], doubly [Ξ++cc ,Ξ+cc, Ξ0cb, Ξ+cb ,Ξ0bb, Ξ-bb, Ω+cc, Ω0cb, Ω-bb ] and triply [Ωccc, Ωccb, Ωcbb, Ωbbb] baryons have been studied for JP = (1/ 2)+ (3/2)+ states, considering diquark-quark configuration baryons. results found to be good agreement with available experimental data other theoretical works.