## Aleksandr V. Bukalove-mail: boukalov@gmail.com ## Determination of the Hubble parameter exact value
The formula, obtained under the Universe quantum description, connects the values of the Universe mass and Hubble parameter G·M, which follows from the obtained formula. The discretion and limitation of energy of the Universe eliminates the Λ-problem, and calculated density of vacuum energy corresponds to the observed one.
_{U}~tKey words:
quantum cosmology, vacuum of the Universe, harmonic oscillator, circular oscillation frequency, Hubble parameter.
H_{0} is directly connected to the age of the Universe, and its determination is very important for the understanding of the Universe evolution.
The experimental determination of the Hubble parameter is connected to the objective difficulties, and permanent efforts of different research groups give the rather dispersed values. However, a method of the theoretical exact determination of the Hubble parameter could be proposed. Now the Universe is described not only classically by the General Relativity, but also in the bounds of quantum cosmology, in the theories of the quantum universe birth from the vacuum, including inflationary cosmology [1, 2, 3]. According to A.Sacharov [4] the gravity is connected to the elasticity of vacuum of the elementary particles, therefore we can consider own the oscillations of the elastic vacuum of the Universe as an united whole and that oscillations (at least some of them) correspond to oscillations determined from the General Relativity. Since gravitational radius of the closed Universe (Ω=1.02±0.02 [7]) accordingly to the gravitational theory of Einstein makes up
GM_{U} /c^{2}=8.46·10^{23}m, (1)
where M=5.70·10_{U}^{53}kg is the mass of the closed Universe [5], the according time of extension or compression makes
T=2.818·10_{G}=R_{G} /c^{18}s, (2)
and the pulsation period is T=2_{p}T=5.636·10_{G}^{18}s.
If we consider the elastic universe, filled up with a vacuum (possibly scalar) field, as a harmonic oscillator with the equation of movement
For the quantum vacuum universe the frequency Thus, if the period of the natural Universe oscillations is accepted to be Then
Taking into account that by the latest data This means that the Hubble parameter can be calculated with high accuracy, which is considerably higher than experimental accuracy, but perfectly accords with it. In its turn, the formula (8) also allows to calculate the mass of the Universe:
The mass, on the basis of experimental data on However, Hubble parameter is a function of time G·M. (10)
_{U}~tResults from (10) were discussed in particular article. If vacuum energy density is set by vacuum field, then according to Zeldovich [9]:
With the obtained The given results show that the Universe energy could correspond to the discrete energy level of the macroscopic coherence field. Then in the simplest case the Universe could be described by the Schrödinger equation for one-dimensional harmonic oscillator:
The given results show that the Universe could be considered as macroscopic quantum state of a coherence field, which is described by the equation for harmonic oscillator. If the Universe energy corresponds to zero energy, then
Then, probably, another energy levels of single Universe correspond to different macroscopic energy levels (n=1,2,3,…) of macroscopic coherent field, or to existence of another universes. If energy of universe corresponds to difference of adjacent energy levels of that field, then It is wonderful, that a simple model of quantum oscillator gives the exact results. This gives evidence about the quantum nature of Universe, filled up with a coherent vacuum (possibly scalar) field. Note, that the quantilization of universe energy, probably, automatically eliminates the known vacuum energy problem - the cosmological constant problem (Λ-problem). Mass and energy of universe are limited, which limits the vacuum energy density and brings it down to observed value (11), that is 10 Like an introduction of a quantum of action by M.Plank in 1900 allowed the explanation of the experimental data on electromagnetic radiation, the consideration of the Universe as a quantum object allows the calculation of the Hubble parameter and other cosmological parameters.
References: *Linde A.D.*Particle physics and inflationary cosmology. (Boston,MA: Harvard University Press) (1990).*Fomin P.I.*Preprint ITEP-73-1379. Kiev (1973).*Tryon E.P.*Nature. 246, 396 (1973).*Sacharov A.D.*RAS USSR, 177, 70 (1967).*Bukalov A.V.*Proc. 2-nd Conf. "Gravitation, Cosmology and Relativistic Astrophysics" (Kharkov National University) 93 (2003).*CODATA*http://www.codata.org*Spergel D.N.*et al., astro-ph/0302209.*Misner C., Thorne K. and Wheeler J.*Gravitation, (London: Freeman) (1973).*Zeldovich Y.B.*JETP lett. 6, 345 (1967).*Weinberg S.*Rev. Mod. Phys., 61, 1 (1989).
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