Abstract
A cosmological model was developed using the equation of state of photon gas, as well as cosmic time. The primary objective of this model is to see if determining the observed rotation speed of galactic matter is possible, without using dark matter (halo) as a parameter. To do so, a numerical application of the evolution of variables in accordance with cosmic time and a new state equation was developed to determine precise, realistic values for a number of cosmological parameters, such as the energy of the universe U, cosmological constant Λ, the curvature of space k, energy density ρΛe, age of the universe tΩ etc. The development of the state equation highlights the importance of not neglecting any of the differential terms given the very large amounts in play that can counterbalance the infinitesimals. Some assumptions were put forth in order to solve these equations. The current version of the model partially explains several of the observed phenomena that raise questions. Numerical application of the model has yielded the following results, among others: Initially, during the Planck era, at the very beginning of Planck time, tp, the universe contained a single photon at Planck temperature TP, almost Planck energy EP in the Planck volume. During the photon inflation phase (before characteristic time ~10-9 [s]), the number of original photons (alphatons) increased at each unit of Planck time tp and geometrical progression~n3, where n is the quotient of cosmic time over Planck time t/tp. Then, the primordial number of photons reached a maximum of N~1089, where it remained constant. These primordial photons (alphatons) are still present today and represent the essential of the energy contained in the universe via the cosmological constant expressed in the form of energy EΛ. Such geometric growth in the number of photons can bring a solution to the horizon problem through γγ exchange and a photon energy volume that is in phase with that of the volume energy of the universe. The predicted total mass (p, n, e, and ν), based on the Maxwell-Juttner relativistic statistical distribution, is ~7 × 1050 [kg]. The predicted cosmic neutrino mass is ≤8.69 × 10-32 [kg] (≤48.7 [keV·c-2]) if based on observations of SN1987A. The temperature variation of the cosmic microwave background (CMB), as measured by Planck, can be said to be partially due to energy variations in the universe (ΔU/U) during the primordial baryon synthesis (energy jump from the creation of protons and neutrons).
Highlights
Formulation of the Model, Initial ConceptCosmology fascinates
The development of the state equation highlights the importance of not neglecting any of the differential terms given the very large amounts in play that can counterbalance the infinitesimals
The following are the key premises of the model: - The macroscopic laws of physics applied after the Planck era; - At the beginning (1tp, Planck time), all of the energy in the universe was electromagnetic; the conventional photon gas equation of state applies; - All infinitesimal variations of dr, dT, dP, dV, and similar variables are to be considered and maintained in the elaboration of differentials equations given the large and small quantities involved in the equation terms
Summary
The Hubble-Lemaître law takes the following simple form: In this version, H varies according to cosmic time. Let us write the equation of state for photon gas in the form of the variation, freely choosing the negative form of the variations, which allows to denote the possible existence of a singularity at the beginning of the evolution of the universe. The value of H can vary according to different expansion scenarios In this version of the model, we assume that the Hubble constant decreases monotonically with time. We find that the number of photons increases according to a geometrical progression of ~n3 over a characteristic time of ~10−9 [s] for an age of 76.1 [Gy], up to amaximum where it remains constant. 6.0E+08 4.0E+08 2.0E+08 1.0E+00 maximum photon energy =0.9Ep 5.4E-44 universe age (s)
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More From: Journal of High Energy Physics, Gravitation and Cosmology
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