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Comparison of mean-field and exact Monte Carlo solutions of a one-dimensional nuclear model
(1989)
The ground states of nuclear matter and finite nuclei are calculated for a one-dimensional model having a two-body potential with strong short-range repulsion and long-range attraction. Mean-field theory with a phenomenological ...
Stochastic calculation of tunneling in systems with many degrees of freedom
(1988)
A new method is presented for the stochastic solution of tunneling problems in quantum many-body systems. The primary practical problem of trapping in local minima of the action is overcome by extending the standard ...
Quark mass hierarchies and natural flavor conservation as stable fixed points
(1988)
In the context of two-Higgs models, a hierarchy of heavy quark masses can be generated naturally at the infrared fixed point of the renormalization group equations for the Yukawa couplings, while flavor-changing neutral ...
Monoenergetic (e+e-) pairs from heavy ion collisions
(1988)
Energy and angular correlations of (e+e-) pairs emitted in HI collisions were investigated. Some evidence is found for a weak peak at 815±5keV in the (e+e-) sum-energy spectrum obtained for θe+c- = 180° ± 18° (FWHM). The ...
Structure of S/emph> from nuclear production experiments
(1987)
The three models for the structure of S*, where it is considered as a member of the qq L=1 nonet, or as a member of the lightest q2q 2 nonet or as a KK molecule, can be distinguished by studying the A dependence of the ...
Two separated SU(2) Yang-Mills-Higgs monopoles in the Atiyah-Drinfeld- Hitchin-Manin-Nahm construction
(1982)
We study two arbitrarily separated SU(2) Yang-Mills-Higgs monopoles in the Atiyah-Drinfeld-Hitchin-Manin-Nahm (ADHMN) construction. In particular, we obtain an exact analytical expression for the Higgs field on the axis ...
Cooling and the string tension in lattice gauge theories
(1989)
We explore the possibility of improving the determination of the string tension using the cooling method. We present preliminary results for the gauge group SU(2): We find that statistical errors are drastically reduced ...
The topological susceptibility on the lattice
(1988)
We study the multiplicative renormalization of the topological charge operator on the lattice with respect to the continuum. Apparent discrepancies between different methods of determination of the topological charge on ...
Heavy family masses: Analytic results
(1985)
We solve analytically the one-loop renormalization group equations for the fermion mass matrices and the quartic coupling, assuming a perturbative SU(3)×SU(2)×U(1) desert, one elementary Higgs boson and any number of ...