Archivo Digital UPM: No conditions. Results ordered -Date Deposited. 2022-01-19T00:56:15ZEPrintshttps://oa.upm.es/style/images/logo-archivo-digital.pnghttps://oa.upm.es/2013-08-29T11:53:13Z2016-04-21T15:26:13Zhttps://oa.upm.es/id/eprint/15381This item is in the repository with the URL: https://oa.upm.es/id/eprint/153812013-08-29T11:53:13ZQuantization of the universe as a black hole.It has been shown that black holes can be quantized by using Bohr’s idea of quantizing the motion of an electron inside the atom. We apply these ideas to the universe as a whole. This approach reinforces the suggestion that it may be a way to unify gravity with quantum theory.Mariùs Josep Fullana i AlfonsoAntonio Alfonso-Faus2013-08-29T11:06:57Z2016-04-21T15:26:17Zhttps://oa.upm.es/id/eprint/15382This item is in the repository with the URL: https://oa.upm.es/id/eprint/153822013-08-29T11:06:57ZUniversality of the self gravitational potential energy of any fundamental particle.Using the relation proposed by Weinberg in 1972, combining quantum and cosmological parameters, we prove that the self gravitational potential energy of any fundamental particle is a quantum, with physical properties independent of the mass of the particle. It is a universal quantum of gravitational energy, and its physical properties depend only on the cosmological scale factor R and the physical constants ℏ and c. We propose a modification of the Weinberg’s relation, keeping the same numerical value, but substituting the cosmological parameter H/c by 1/R.Antonio Alfonso-Faus2013-08-29T10:51:32Z2016-04-21T15:26:21Zhttps://oa.upm.es/id/eprint/15383This item is in the repository with the URL: https://oa.upm.es/id/eprint/153832013-08-29T10:51:32ZEvidence for a disaggregation of the universe.Combining the kinematical definitions of the two dimensionless parameters, the deceleration q(x) and the Hubble t 0 H(x), we get a differential equation (where x=t/t 0 is the age of the universe relative to its present value t 0). First integration gives the function H(x). The present values of the Hubble parameter H(1) [approximately t 0 H(1)≈1], and the deceleration parameter [approximately q(1)≈−0.5], determine the function H(x). A second integration gives the cosmological scale factor a(x). Differentiation of a(x) gives the speed of expansion of the universe. The evolution of the universe that results from our approach is: an initial extremely fast exponential expansion (inflation), followed by an almost linear expansion (first decelerated, and later accelerated). For the future, at approximately t≈3t 0 there is a final exponential expansion, a second inflation that produces a disaggregation of the universe to infinity. We find the necessary and sufficient conditions for this disaggregation to occur. The precise value of the final age is given only with one parameter: the present value of the deceleration parameter [q(1)≈−0.5]. This emerging picture of the history of the universe represents an important challenge, an opportunity for the immediate research on the Universe. These conclusions have been elaborated without the use of any particular cosmological model of the universeAntonio Alfonso-Faus2010-05-07T08:59:49Z2016-04-20T12:37:54Zhttps://oa.upm.es/id/eprint/3059This item is in the repository with the URL: https://oa.upm.es/id/eprint/30592010-05-07T08:59:49ZFractal universe and the speed of light: Revision of the universal constantsWe apply the property of selfsimilarity that corresponds to the concept of a fractal universe, to the dimension of time. It follows that any interval of time, given by any tick of any clock, is proportional to the age of the universe. The fractality of time gives the fractality of space and mass. First consequence is that the speed of light decreases inversely proportional to time, same as the Hubble parameter. We then revise the universal constants and, at the cosmological scale, they are all of order one, as Dirac proposed. We find three different scales, each one separated by a factor of about 5x10^60: the universe, the Planck scale and what we call the sub Planck scale. Integration of the Einstein cosmological equations, for this fractal universe, gives the solution of a non-expanding universe with the present value of the observed numerical parameters. The red shift measured from the distant galaxies is interpreted here as due to the decreasing speed of light in a fractal universe.Antonio Alfonso-Faus2010-05-07T08:30:36Z2016-04-20T12:37:57Zhttps://oa.upm.es/id/eprint/3060This item is in the repository with the URL: https://oa.upm.es/id/eprint/30602010-05-07T08:30:36ZThe Speed of Light and the Hubble Parameter: The Mass-Boom EffectWe prove here that Newton’s universal gravitation and momentum conservation laws together reproduce Weinberg’s relation. It is shown that the Hubble parameter H must be built in this relation, or equivalently the age of the Universe t . Using a wave-to-particle interaction technique we then prove that the speed of light c decreases with cosmological time, and that c is proportional to the Hubble parameter H. We see the expansion of the Universe as a local effect due to the LAB value of the speed of light c0 taken as constant. We present a generalized red shift law and find a predicted acceleration for photons that agrees well with the result from Pioneer 10/11 anomalous acceleration. We finally present a cosmological model coherent with the above results that we call the Mass-Boom. It has a linear increase of mass m with time as a result of the speed of light c linear decrease with time, and the conservation of momentum mc. We obtain the baryonic mass parameter equal to the curvature parameter, Ωm = Ωk, so that the model is of the type of the Einstein static, closed, finite, spherical, unlimited, with zero cosmological constant. This model is the cosmological view as seen by photons, neutrinos, tachyons etc. in contrast with the local view, the LAB reference. Neither dark matter nor dark energy is required by this model. With an initial constant speed of light during a short time we get inflation (an exponential expansion). This converts, during the inflation time, the Planck’s fluctuation length of 10−33 cm to the present size of the Universe (about 1028 cm, constant from then on). Thereafter the Mass-Boom takes care to bring the initial values of the Universe (about 1015 gr) to the value at the present time of about 1055 gr.Antonio Alfonso-Faus