Fermions, scalars and dark energy

Details Fermions, scalars and dark energy Fermions, scalars and dark energy

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1261..191m&link_type=abstract

ACHIEVEMENTS AND NEW DIRECTIONS IN SUBATOMIC PHYSICS: Festchrift in Honor of Tony Thomas 60th Birthday. AIP Conference Proceedi

Physics

Nuclear Physics

Dark Matter, Supernovae, Neutrino Mass, Cosmology, Dark Energy, Nuclear Physics Aspects Of Novae, Supernovae, And Other Explosive Environments, Neutrino Mass And Mixing, Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

We present a model in which neutral fermions, weakly interacting with light scalars, can lead to a regime in which the equation of state parameter is near (but above) -1 for a range of values of the red shift z. Our model is distinguished from many scalar field models which give a cosmic acceleration by requiring that the equation of state parameter approaches 0 as the density of our fermions approaches zero, and approaches the value for a relativistic gas in the early universe.

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