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The Quantum Cosmology can be understand as the theory of an one object thatis the Universe described in terms of fundamental mass groundstate of the freeboson string, that is a tachyon - a hypothetical particle with negative masssquare, which has linear velocity more than the velocity of light c. From thisfact it is clear that whole information about physics of our Universe isfocused on studying of this untypical particle physics. In this paper thispoint of view is touched up on. As the general-relativistic model of ourUniverse we study the Einstein-Friedmann Spacetime. Firstly, the way ofcanonical quantization beginning from first quantization of the DiracHamiltonian constraints up to the second quantization by the VonNeumann-Araki-Woods quantization in the Fock space is briefly discussed. Weshow that using of the Bogoliubov-Heinsenberg static operator basis leads toformulation of the second quantization of the considered free boson string interms of the monodromy in the Fock space. Finally, we propose some specificmodel of the Universe - the extremal tachyon mass model, and in frames of itsthe Hubble evolution parameter, the equation of state for Dark Matter in theUniverse, and the temperature of our Universe are concluded.

On quantum cosmology as field theory of bosonic string mass groundstate