Showing papers by "Institute of Physics, Bhubaneswar published in 1989"
TL;DR: In this paper, Symanzik's improvement program is extended to lattice QCD with Susskind fermions and all relevant Feynman rules are derived both for lattice of infinite extent and for lattices of finite extent with twisted boundary conditions.
86 citations
TL;DR: In this article, a Z 4 orbifold model with abelian embedding was constructed and it was shown that the model leads to the minimal gauge group SU(3)×SU(2)×U(1) n in the presence of Wilson lines.
4 citations
TL;DR: In this article, the mass table containing the mass excesses of 3481 nuclei in the range 18⩽A ⩽ 267 has been made, based on this, a mass formula is compared with other mass models.
Abstract: The ground-state energy of an atomic nucleus with asymmetryβ is considered to be equivalent to the energy of a perfect sphere made up of the infinite nuclear matter of the same asymmetry plus a residual energyη called the local energy,η represents the energy due to shell, deformation, diffuseness and exchange Coulomb effect etc. Using this picture and the generalized Hugenholtz- Van Hove theorem of many-body theory a new mass formula has been developed. Based on this, a mass table containing the mass excesses of 3481 nuclei in the range 18 ⩽A ⩽ 267 has been made. This mass formula is compared with other mass models.
4 citations
TL;DR: A brief review of the Hartree-Fock approximation to nuclear shapes and nuclear spectra is presented in this paper, where various aspects of rotation-alignment effect and high spin states are illustrated.
Abstract: A brief review of the Hartree-Fock approximation to nuclear shapes and nuclear spectra is presented. Various aspects of rotation-alignment effect and high spin states are illustrated in the Hartree-Fock model.
1 citations
TL;DR: Parity mixing in deformed Hartree-Fock orbits preferentially lowers the energies of prolate deformed shapes and leads to a consistent description of the shapes of A ≈ 70 nuclei as discussed by the authors.
Abstract: Parity mixing in deformed Hartree-Fock orbits preferentially lowers the energies of prolate deformed shapes and leads to a consistent description of the shapes of A ≈ 70 nuclei.
TL;DR: The Compton profile of a polycrystalline Cu 0.975 Be 0.025 alloy has been measured using 59.4 keV gamma rays from a 3 Ci 241 Am annular source as mentioned in this paper.
TL;DR: In this article, a superstring inspired E 6 model with two generations of fermions, one being heavier than the other, can accommodate a light Dirac neutrino.
TL;DR: In this article, some non-perturbative techniques of field theory as applied to nuclear physics are discussed, including Walecka's mean field approach and its generalizations with a many-body description.
Abstract: We discuss here some non-perturbative techniques of field theory as applied to nuclear physics. We first describe Walecka’s mean field approach and its generalizations with a many-body description. We next apply to nuclear matter a new approach to strongly interacting systems, of which Walecka’s method becomes a specific approximation. The phenomenological implications of the same are also discussed.