The decay of the K58 isomer in Ce with an excitation energy of 2340.2 keV has been investigated using the Sn(O,4n)Ce reaction. A half-life of 9.460.3 ms was determined. Two new decay paths have been found in the deexcitation of this isomer. The hindrance factors for the E1, M2, and E3 transitions deexciting the isomer have been determined. The decay properties of the 8 isomers in the N574 isoto...

We examine the ground state and excitations of the one dimensional extended Hubbard model with long range interaction. The ground state wavefunction and low lying excitations are given explicitly in the form of a Jastrow product of two-body terms. This result motivates an asymptotic Bethe ansatz solution for the model. We present evidence that this solution is in fact exact and spans the comple...

Properties of single heavy flavor baryons in a non relativistic potential model with colour coulomb plus power law confinement potential have been studied. The ground state masses of single heavy baryons and the mass difference between the (JP = 3 2 + and JP = 1 2 + ) states are computed using a spin dependent two body potential. Using the spin-flavour structure of the constituting quarks and b...

Spin-spin interaction causes the mixing between ground state wave functions of baryons containing three quarks of different flavors. We examine the effect of this mixing on the baryon masses in the framework of the modified bag model.

The two-loop self-energy correction is evaluated to all orders in Zα for the groundstate Lamb shift of H-like ions with Z ≥ 20, where Z is the nuclear charge number and α is the fine structure constant. The results obtained are compared with analytical calculations performed within the Zα-expansion.

The process π + A leading to a pair of mini-jets at high relative transverse momentum (kt ∼ > 2 GeV) while leaving the nucleus in its ground state was selected as a definitive test of the existence of color transparency by Frankfurt, Miller and Strikman in 1993. The preliminary results of Fermilab experiment E791, led by Ashery and Weiss–Babai, show a strong A-dependence, consistent with the no...

Lack of Lorentz invariance of QCD at finite quark chemical potential in general implies the need of Lorentz non-invariant condensates for the self-consistent description of the color-superconducting ground state. Moreover, the spontaneous breakdown of color SU(3) in this state naturally leads to the existence of SU(3) non-invariant non-superconducting expectation values. We illustrate these obs...

We investigate ground state properties of a quasi-one-dimensional electron-lattice coupled model for quarter-filled molecular conductors. The effective one-dimensional extended Hubbard model coupled to adiabatic lattice degree of freedom is derived by the inter-chain mean-field approximation and solved by Lanczos exact diagonalization method. We find that the critical behavior among lattice tet...