Sourabh Banerjee

• Ph.D (Science)
• Professor (Assistant) at Government General Degree College at Kushmandi

That two losing (gambling) games, suitably combined, can result in a winning combination was shown by Juan M. R. Parrondo, and is known as the Parrondo paradox. We explored the periodic sequences of such games to see if it always holds, and why. A systematic study involving DTMC analysis and use of tree diagrams shows that a trade-off between the r...

Correlations of two flow harmonics vn and vm via three- and four-particle cumulants are measured in 13 TeV pp, 5.02 TeV p+Pb, and 2.76 TeV peripheral Pb+Pb collisions with the ATLAS detector at the LHC. The goal is to understand the multi-particle nature of the long-range collective phenomenon in these collision systems. The large non-flow backgrou...

Higgs boson production cross-sections in proton–proton collisions are measured in the H→WW⁎→eνμν decay channel. The proton–proton collision data were produced at the Large Hadron Collider at a centre-of-mass energy of 13 TeV and recorded by the ATLAS detector in 2015 and 2016, corresponding to an integrated luminosity of 36.1fb⁻¹. The product of th...

Event-by-event fluctuations in the elliptic-flow coefficient v2 are studied in PbPb collisions at √sNN = 5.02 TeV using the CMS detector at the CERN LHC. Elliptic-flow probability distributions p(v2) for charged particles with transverse momentum 0.3 < pT < 3.0 GeV/c and pseudorapidity |η| < 1.0 are determined for different collision centrality cla...

Noise is known to disrupt a preferred act or motion. Yet, noise and broken symmetry in asymmetric potential, together, can make a directed motion possible, in fact essential in some cases. In Biology, in order to understand the motions of molecular motors in cells ratchets are imagined as useful models. Besides, there are optical ratchets and quant...

Parrondo's paradox is about a paradoxical game and gambling where two probabilistic losing games can be combined to form a winning game. While the counter intuitive game is interesting in itself, it can be thought of a discrete version of Brownian flashing ratchet which are employed to understand noise induced order. There are plenty of examples fr...

We consider a tight-binding model comprising a hopping and an attractive interaction term to obtain superconductivity. Exact expressions for the isotope-shift exponent and the pressure coefficient of transition temperature are derived invoking the isotopic mass and pressure dependence of both the hopping and attractive interaction terms. The variat...

We have studied the isotope-shift exponent (α) within the polaronic theory of superconductivity as functions of electron-phonon coupling and carrier concentration. α is found to be consistently negative for all concentrations and electron-phonon couplings in contrast to experimental reports. Increasing Coulomb repulsion or use of a singular density...

Attempts to explain the anomalous isotope-shift exponent observed in doped cuprate superconductors invoked the phonon-mediated mechanism and a two-dimensional electron density of states having a van Hove singularity. We show the asymmetric variation of Tc and α with doping through a short-ranged purely electronic interaction between the condensate...