Mirror world and superstring-inspired hidden sector of the Universe, dark matter and dark energy

TY - JOUR

T1 - Mirror world and superstring-inspired hidden sector of the Universe, dark matter and dark energy

AU - Das, C.R.

AU - Laperashvili, L.

AU - Nielsen, Holger Frits Bech

AU - Tureanu, A.

PY - 2011/9/6

Y1 - 2011/9/6

N2 - We develop a concept of parallel existence of the ordinary (O) and hidden (H) worlds. We compare two cases: (1) when the hidden sector of the Universe is a mirror counterpart of the ordinary world, and (2) when it is a superstring-inspired shadow world described, in contrast to the mirror world, by a symmetry group (or by a chain of groups), which does not coincide with the ordinary world symmetry group. We construct a cosmological model assuming the existence of the superstring-inspired E6 unification, broken at the early stage of the Universe to SO(10)×U(1)Z-in the O-world, and to SU(6)′×SU(2)θ′-in the H-world. As a result, we obtain the low-energy symmetry group GSM′×SU(2) θ′ in the shadow world, instead of the standard model group G SM existing in the O-world. The additional non-Abelian SU(2)θ′ group with massless gauge fields, "thetons," is responsible for dark energy. Considering a quintessence model of cosmology with an inflaton σ and an axion aθ, which is a pseudo Nambu-Goldstone boson induced by the SU(2)θ′-group anomaly, we explain the origin of dark energy, dark matter and ordinary matter. In the present model we review all cosmological epochs (inflation, reheating, recombination and nucleosynthesis), and give our version of the baryogenesis. The cosmological constant problem is also briefly discussed.

AB - We develop a concept of parallel existence of the ordinary (O) and hidden (H) worlds. We compare two cases: (1) when the hidden sector of the Universe is a mirror counterpart of the ordinary world, and (2) when it is a superstring-inspired shadow world described, in contrast to the mirror world, by a symmetry group (or by a chain of groups), which does not coincide with the ordinary world symmetry group. We construct a cosmological model assuming the existence of the superstring-inspired E6 unification, broken at the early stage of the Universe to SO(10)×U(1)Z-in the O-world, and to SU(6)′×SU(2)θ′-in the H-world. As a result, we obtain the low-energy symmetry group GSM′×SU(2) θ′ in the shadow world, instead of the standard model group G SM existing in the O-world. The additional non-Abelian SU(2)θ′ group with massless gauge fields, "thetons," is responsible for dark energy. Considering a quintessence model of cosmology with an inflaton σ and an axion aθ, which is a pseudo Nambu-Goldstone boson induced by the SU(2)θ′-group anomaly, we explain the origin of dark energy, dark matter and ordinary matter. In the present model we review all cosmological epochs (inflation, reheating, recombination and nucleosynthesis), and give our version of the baryogenesis. The cosmological constant problem is also briefly discussed.

U2 - 10.1103/PhysRevD.84.063510

DO - 10.1103/PhysRevD.84.063510

M3 - Journal article

SN - 2470-0010

VL - 84

SP - 063510

JO - Physical Review D

JF - Physical Review D

IS - 6

ER -