Preprints

Symmetric nuclear matter is studied within the conserving, self-consistent T-matrix approximation. This approach involves off-shell propagation of nucleons in the ladder diagrams [...]

We examine relations among the parameters characterizing the phenomenological equation of state (EOS) of nearly symmetric, uniform nuclear matter near the saturation density by comparing macroscopic calculations of radii and massesof stable nuclei with the experimental data. The EOS parameters of interest here are the symmetry energy S_0, the symmetry energy density-derivative coefficient L and the incompressibility K_0 at the normal nuclear density. [...]

A simple functional form has been found that gives a good representation of the total reaction cross sections for the scattering of protons from (15) nuclei spanning the mass range ${}^{9}$Be to ${}^{238}$U and for proton energiesranging from 20 to 300 MeV..

We review the status of hybrid baryons. The only known way to study hybrids rigorously is via excited adiabatic potentials. [...]

Following the construction of the projection operators on $ T^2 $ presented by Gopakumar, Headrick and Spradin, we construct the projection operators on the integral noncommutative orbifold $ T^2/G (G=Z_k,k=2, 3, 4, 6)$. Suchoperators are expressed by a function on this orbifold. [...]

By studying singularities in stationary axisymmetric Kerr and Tomimatsu-Sato solutions with distortion parameter \d = 2, 3, ... in general relativity, we conclude that these singularities can be regarded as nothing other than closedstring-like circular mass distributions. [...]

The detection of solar-neutrinos of different origin via induced beta beta process of Mo100 is investigated. The particular counting rates and energy distributions of emitted electrons are presented. [...]

Recent experimental data indicates that the fine structure constant alpha may be varying on cosmological time scales. We consider the possibility that such a variation could be induced by a second order phase transition which occursat late times (z ~ 1 - 3) and involves a change in the vacuum expectation value (vev) of a scalar with milli-eV mass. [...]

We describe the effective supergravity theory present below the scale of spontaneous gauge symmetry breaking due to an anomalous U(1), obtained by integrating out tree-level interactions of massive modes. A simple case is examined insome detail. [...]

We address the problem of accounting for light neutrino masses in theories with dynamical electroweak symmetry breaking. As a possible solution, we embed (extended) technicolor in a theory in which a $|\Delta L|=2$ neutrinocondensate forms at a scale $\Lambda_N \gsim 10^{11}$ GeV, and produces acceptably small (Majorana) neutrino masses. [...]