Mirror World with Broken Mirror Parity, E(6) Unification and Cosmology

TL;DR

This paper explores a parallel mirror universe with broken mirror parity, unification via E6 inspired by string theory, and a quintessence model involving a new gauge group to explain cosmic acceleration.

Contribution

It introduces a novel model of mirror worlds with different E6 breakdowns and a quintessence scenario linked to a new gauge group for dark energy.

Findings

Different evolutions of fine structure constants in O- and M-worlds.

Restoration of broken mirror parity at high energies via E6 unification.

A quintessence model involving a new gauge group with extremely growing coupling.

Abstract

In the present paper we have developed a concept of parallel ordinary (O) and mirror (M) worlds. We have shown that in the case of a broken mirror parity (MP), the evolutions of fine structure constants in the O- and M-worlds are not identical. It is assumed that E_6-unification inspired by superstring theory restores the broken MP at the scale \sim 10^{18} GeV, what unavoidably leads to the different E_6-breakdowns at this scale: E_6 \to SO(10)\times U(1)_Z - in the O-world, and E'_6 \to SU(6)'\times SU(2)'_Z - in the M-world. Considering only asymptotically free theories, we have presented the running of all the inverse gauge constants \alpha_i^{-1} in the one-loop approximation. Then a `quintessence' scenario is discussed for our model of accelerating universe. Such a scenario is related with an axion (`acceleron') of a new gauge group SU(2)'_Z which has a coupling constant g_Z extremely growing at the scale \Lambda_Z\sim 10^{-3} eV.