Standard-model particles and interactions from field equations on spin 9+1 dimensional space

We consider a Dirac equation set on an extended spin space that contains fermion and boson solutions. At given dimension, it determines the scalar symmetries. The standard field equations can be equivalently written in terms of such degrees of freedom, and are similarly constrained. At 9+1 dimensions, the SU(3) X SU(2)_L X U(1) gauge groups emerge, as well as solution representations with quantum numbers of related gauge bosons, leptons, quarks, Higgs-like particles and others as lepto-quarks. Information on the coupling constants is also provided; e. g., for the hypercharge g'=(1/2) sqrt(3/5) ~ >.387, at tree level.Comment: 13 pages, Fig. 1(a)-(d

Hard-core Final State Interaction Effects in Deep Inelastic Scattering

Hard-core final state interaction effects in the response function are investigated in the asymptotic limit of momentum transfer q->Infinity. A new treatment of the response is presented, which displays the relevant scattering contribution. A modification of the otherwise expected free response is obtained for Fermi and Bose systems and smearing of the condensate peak is shown in this limit. A comparison with other treatments of final state interactions is made.Comment: 13 pages, in RevTex. To be published in Physics Letters A. Figures can be obtained from [email protected]

Accelerated expansion of a universe containing a self-interacting Bose-Einstein gas

Acceleration of the universe is obtained from a model of non-relativistic particles with a short-range attractive interaction, at low enough temperature to produce a Bose-Einstein condensate. Conditions are derived for negative-pressure behavior. In particular, we show that a phantom-accelerated regime at the beginning of the universe solves the horizon problem, consistently with nucleosynthesis.Comment: 18 pages, 4 figure