Mathematics – Logic
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005pasc.conf..115g&link_type=abstract
PASCOS 2004 Part I: Particles, Strings and Cosmology* Part II: Themes in Unification -- The Pran Nath Festschrift†. *,†Proceedin
Mathematics
Logic
Scientific paper
An alternative gravity and matter fields theory is studied where the consistency condition of equations of motion yields strong correlation between states of "primordial" fermion fields and local value of the dark energy. The same "primordial" fermion field at different densities can be either in states of regular fermionic matter or in states presumably corresponding to the dark fermionic matter. In regime of the fermion densities typical for normal particle physics, each of the primordial fermions splits into three generations identified with regular fermions. When restricting ourselves to the first two fermion generations, the theory reproduces general relativity and regular particle theory. When fermion energy density is comparable with vacuum energy density, the theory allows new type of states. The possibility of such Cosmo-Low Energy Physics (CLEP) states is demonstrated by means of solutions of the field theory equations describing FRW universe filled by homogeneous scalar field and uniformly distributed nonrelativistic neutrinos. Primordial neutrinos in CLEP state are drawn into cosmological expansion by means of dynamically changing their own parameters. Some of the features of the CLEP state in the late time universe: the mass of the primordial neutrino increases as a3/2 (a = a(t) is the scale factor); its energy density scales as a sort of dark energy and approaches constant as a → ∞ this cold dark matter possesses negative pressure and its equation of state approaches that of the cosmological constant as a → ∞ the total energy density of such universe is less than it would be in the universe free of fermionic matter at all. The latter means that nonrelativistic neutrinos are able to produce expanding bubbles of the CLEP state playing the role of a true "cosmological vacuum" sorrounded by a "regular" vacuum.
Guendelman Eduardo I.
Kaganovich Alexander B.
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