- th / 9 41 10 04 v 1 7 N ov 1 99 4 COLOR TRANSPARENCY ASSUMPTIONS

ar X iv : m tr l - th / 9 41 10 04 v 1 1 6 N ov 1 99 4 Three - dimensional electronic instabilities in polymerized solid A

The low-temperature structure of AC 60 (A=K, Rb) is an ordered array of polymerized C 60 chains, with magnetic properties that suggest a non-metallic ground state. We study the paramagnetic state of this phase using first-principles electronic-structure methods, and examine the magnetic fluctuations around this state using a model Hamiltonian. The electronic and magnetic properties of even this...

ar X iv : n uc l - th / 9 41 10 03 v 1 7 N ov 1 99 4 Closed shells at drip - line nuclei

The shell structure of magic nuclei far from stability is discussed in terms of the self-consistent spherical Hartree-Fock-Bogoliubov theory. In particular, the sensitivity of the shell-gap sizes and the two-neutron separation energies to the choice of particle-hole and particle-particle components of the effective interaction is investigated.

ar X iv : n uc l - th / 9 71 10 28 v 1 1 4 N ov 1 99 7 A clue to the mechanism of Λ K + production in pp - reactions ∗

ar X iv : a st ro - p h / 99 11 40 7 v 1 2 2 N ov 1 99 9 The First Five Minutes of a Core Collapse Super - nova : Multidimensional Hydrodynamic Models

ar X iv : h ep - l at / 9 91 10 04 v 1 4 N ov 1 99 9 RUHN - 99 – 4 Bounds on

New exact upper and lower bounds are derived on the spectrum of the square of the hermitian Wilson Dirac operator. It is hoped that the derivations and the results will be of help in the search for ways to reduce the cost of simulations using the overlap Dirac operator.