49,206 research outputs found
The generalized Fenyes-Nelson model for free scalar field theory
The generalized Fenyes--Nelson model of quantum mechanics is applied to the
free scalar field. The resulting Markov field is equivalent to the Euclidean
Markov field with the times scaled by a common factor which depends on the
diffusion parameter. This result is consistent between Guerra's earlier work on
stochastic quantization of scalar fields. It suggests a deep connection between
Euclidean field theory and the stochastic interpretation of quantum mechanics.
The question of Lorentz covariance is also discussed.Comment: 6 page
Effects of CP Violation from Neutral Heavy Fermions on Neutrino Oscillations, and the LSND/MiniBooNE Anomalies
Neutrinos may mix with ultralight fermions, which gives flavor oscillations,
and with heavier fermions, which yields short distance flavor change. I
consider the case where both effects are present. I show that in the limit
where a single oscillation length is experimentally accessible, the effects of
heavier fermions on neutrino oscillations can generically be accounted for by a
simple formula containing four parameters, including observable CP violation. I
consider the anomalous LSND and MiniBooNE results, and show that these can be
fit in a model with CP violation and two additional sterile neutrinos, one in
the mass range between 0.1 and 20 eV, and the other with mass between 33 eV and
40 GeV. I also show that this model can avoid conflict with constraints from
existing null short baseline experimental results.Comment: 12 pages, 3 figure
Progress in Electroweak Baryogenesis
Recent work on generating the excess of matter over antimatter in the early
universe during the electroweak phase transition is reviewed.Comment: 50 pages (figures on request), uses harvmac (table of contents
correct for "l" format), UCSD-93-2,BU-HEP-93-
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