Institute of Physics, Bhubaneswar

About: Institute of Physics, Bhubaneswar is a facility organization based out in Bhubaneswar, Orissa, India. It is known for research contribution in the topics: Large Hadron Collider & Hadron. The organization has 566 authors who have published 1768 publications receiving 64889 citations.

Supersymmetry in Quantum Mechanics

Abstract: An elementary introduction is given to the subject of Supersymmetry in Quantum Mechanics. We demonstrate with explicit examples that given a solvable problem in quantum mechanics with n bound states, one can construct new exactly solvable n Hamiltonians having n-1,n-2,...,0 bound states. The relationship between the eigenvalues, eigenfunctions and scattering matrix of the supersymmetric partner potentials is derived and a class of reflectionless potentials are explicitly constructed. We extend the operator method of solving the one-dimensional harmonic oscillator problem to a class of potentials called shape invariant potentials. Further, we show that given any potential with at least one bound state, one can very easily construct one continuous parameter family of potentials having same eigenvalues and s-matrix. The supersymmetry inspired WKB approximation (SWKB) is also discussed and it is shown that unlike the usual WKB, the lowest order SWKB approximation is exact for the shape invariant potentials. Finally, we also construct new exactly solvable periodic potentials by using the machinery of supersymmetric quantum mechanics.

Temperature and fissility dependence of fragment mass variance in heavy ion induced fission

Abstract: Fission fragment mass and kinetic energy distributions have been measured in {sup 12}C+{sup nat}Pb, {sup 209}Bi, {sup 235}U, and {sup 11}B+{sup 209}Bi reactions at above barrier energies. The variance of the fragment mass distribution ({sigma}{sub A}{sup 2}) has been studied as a function of the temperature and fissility of the compound nucleus by analyzing the present results along with the available data from literature. It is observed that {sigma}{sub A}{sup 2} increases exponentially with temperature as well as fissility of the compound nucleus. However, when data are analyzed with respect to the fragment temperature (T{sub F}), instead of the temperature of compound nucleus, the dependence of {sigma}{sub A}{sup 2} on fissility is greatly reduced for a given value of T{sub F}. The mass variance shows a universal dependence on T{sub F} irrespective of the fissility of the compound nucleus. This result implies that the mass variance is decided during the later stage of fission process and is related to the scission configuration of the fissioning nucleus.

Shape coexistence and parity doublet in Zr isotopes

Abstract: The ground and excited states properties of Zr isotopes are studied from proton to neutron drip lines using the relativistic (RMF) and nonrelativistic (SHF) mean-field formalisms with Bardeen–Cooper–Schrieffer (BCS) and Bogoliubov pairing, respectively. The well-known NL3* and SLy4 parameter sets are used in the calculations. We have found spherical ground and low-lying large deformed excited states in most of the isotopes. Several couples of Ωπ = 1/2± parity doublets configurations are noticed, while analyzing the single-particle energy levels of the large deformed configurations.

Pseudorapidity distributions of charged hadrons in proton-lead collisions at √sNN=5.02 and 8.16 TeV

Abstract: The pseudorapidity distributions of charged hadrons in proton-lead collisions at nucleon-nucleon center-of-mass energies root s(NN) = 502 and 816 TeV are presented The measurements are based on data samples collected by the CMS experiment at the LHC The number of primary charged hadrons produced in non-single-diffractive proton-lead collisions is determined in the pseudorapidity range vertical bar eta(lab)vertical bar vertical bar(vertical bar eta cm vertical bar) < 05 are 171 +/- 001 (stat) +/- 059 (syst) and 2010 +/- 001 (stat) +/- 05(syst) at root s(NN) = 502 and 816 TeV, respectively The particle densities per participant nucleon are compared to similar measurements in proton-proton, proton-nucleus, and nucleus-nucleus collisions