ar X iv : h ep - p h / 99 02 30 6 v 1 1 0 Fe b 19 99 Nonperturbative Contributions to the Hot Electroweak Potential

ar X iv : h ep - p h / 99 02 38 6 v 1 1 8 Fe b 19 99 Conditions for Nuclear – Matter Lasers

Conditions are analysed when in dense and hot nuclear matter large amounts of Bose particles can be created. An intensive production of Bose particles is the main necessary condition for realizing their coherent emission similar to radiation from photon lasers. The consideration is based on the multichannel model of nuclear matter. Analysis shows that possible candidates for nuclear–matter lasi...

ar X iv : h ep - t h / 99 02 13 1 v 1 1 8 Fe b 19 99 NBI - HE - 99 - 05 Introduction to the Maldacena Conjecture on AdS / CFT

These lectures do not at all provide a general review of this rapidly growing field. Instead a rather detailed account is presented of a number of the most elementary aspects.

ar X iv : m at h / 99 02 08 6 v 1 [ m at h . SP ] 1 4 Fe b 19 99 THE REDUCED WAVE EQUATION IN LAYERED MATERIALS

ar X iv : h ep - p h / 99 02 37 2 v 1 1 7 Fe b 19 99 ADP

We calculate the parton distributions for both polarized and unpolarized octet and decuplet baryons, using the MIT bag, dressed by mesons. We show that the hyperfine interaction responsible for the ∆-N and Σ 0-Λ splittings leads to large deviations from SU (3) and SU (6) predictions. For the Λ we find significant polarized, non-strange parton distributions which lead to a sizable Λ polarization...

ar X iv : h ep - p h / 99 02 36 9 v 1 1 6 Fe b 19 99 UCSD / PTH 99 – 02 JLAB

The decays B+ → D∗+ s γ and B+ → D∗+γ can be used for an extraction of |Vub|. When the b and c quarks are nearly degenerate the rate for these modes can be determined in terms of other observed rates, namely BB mixing and D → Dγ decay. To this end we introduce a novel application of heavy quark and flavor symmetries. Although somewhat unrealistic, this limit provides us with a first estimate of...