Is the Universe a White-Hole?

Pathria(1972) has shown, for a pressureless closed Universe, that it is inside a black (or white) hole. We show now, that the Universe with a cosmic pressure obeying Einstein's field equations, can be inside a white-hole. In the closed case, a positive cosmological constant does the job; for the flat and open cases, the condition we find is not verified for the very early Universe, but with the growth of the scale-factor, the condition will be certainly fulfilled for a positive cosmological constant, after some time. We associate the absolute temperature of the Universe, with the temperature of the corresponding white-hole.Comment: 7 pages including front cover. Publishe

Why the Initial Infinite Singularity of the Universe is Not There

We "explain", using a Classical approach, how the Universe was created out of "nothing", i.e., with no input of initial energy. This is a Universe with no-initial infinite singularity of energy density.Comment: International Journal of Theoretical Physics, 48, 2253-2255(2009

Rotation in a Generalised Dirac's Universe

The extension of Dirac's LNH to cover cosmological and fine-structure time-varying "constants", and the rotation of the Universe, is here analysed, including a "derivation" of the angular speed of the present Universe, and of the inflationary phase. Criticizable points on the present calculation, are clarified.Comment: 13 pages including front cover. Submitted. The former title was "Rotation of the Universe and LNH". I have re-written and added several new informatio

Are Mass and Length Quantized?

We suggest that there are time-varying quanta of mass (gomidia) and of length (somia), thus pointing to a quantization of geometry and gravitation. The present numerical value of the gomidium and somium, are, 10 to the power minus 65 grams, and 10 to the power minus 91 centimeters. Gomidia may be responsible for dark matter in the Universe; Heisenberg's principle, confirms the numerical estimates for gomidia and somia, either for the present Universe, or for Planck's time.Comment: New version is entirely re-written. I clarified and went more directly "to the point". I added material on Heisenberg's uncertainty and deleted all reference to neutrinos. Submitte

On the Zero-energy Universe

We consider the energy of the Universe, from the pseudo-tensor point of view(Berman,1981). We find zero values, when the calculations are well-done.The doubts concerning this subject are clarified, with the novel idea that the justification for the calculation lies in the association of the equivalence principle, with the nature of co-motional observers, as demanded in Cosmology. In Section 4, we give a novel calculation for the zero-total energy result.Comment: 14 pages, to be published by International Journal of Theoretical Physic

Gravitons, Dark Matter, and Classical Gravitation

We find that the quantum of gravity, the graviton, has time-varying mass (the gomidium), and radius (the somium); both vary with the inverse of R; and its frequency is given by Hubble's parameter. Dark matter can be made of such gravitons. The number of gravitons varies with R-squared . The Machian radiated power of the Universe leads us to a "correct" energy density for the gravitons as dark matter.Comment: To be published by AIP Proceedings of Symposium on Gravitational Waves (eds C.Corda and H.J.M.Cuesta), 200

Energy and Angular Momentum of Dilaton Black Holes

Following a prior paper, we review the results for the energy and angular momentum of a Kerr-Newman black hole, and then calculate the same properties for the case of a generalised rotating dilaton of the type derived, without rotation, by Garfinkle, Horowitz, and Strominger (1991; 1992). We show that there is, as far as it refers only to the energy and angular momentum, an interaction among the fields, so that, the gravitational and electromagnetic fields may be obscured by the strength of the scalar field.Comment: 12 pages including front cover. Enlarged version, contains a proposed metric element for K-N dilaton. Final version to be published in RevMexAA,volume 44,October issue(2008

On the Magnetic Field, and Entropy Increase, in a Machian Universe

By means of the experimental result on the present equipartition between background microwave radiation energy and that of the interstellar magnetic field, and by advancing a Machian relation for the magnetic field, which, differently than in other authors' papers, is valid for the entire spanlife of the Universe, implying that the magnetic field depends on the inverse radius of the Universe, we obtain a general formula such that B depends on the inverse of R . Our estimate for Planck's magnetic field is (1/1000) times the Sabbata and Sivaram's one. It is shown that the energy densities involved in the above problem are dependent on the inverse square of R . For radiation, this implies, as we show, that the total entropy of the Universe is increasing with expansion. In particular we show that R depends on the inverse square of T, where T is the absolute temperature, and the entropy is proportional to the 3/2 power of R .Comment: 6 pages including front cover. Submitted. In v.2, minor corrections have been made, while pointing that, in the adopted formalism, each form of energy, which contributes to the total energy of the Universe, when taken as fractions of the energy M, (c=1) remain constant in time, for the whole history of the Universe; this is of course also true for the lambda-driven Universe as found experimentaly by A.Riess and colaborator

Misconceptions on Relativity Gravitation and Cosmology

Fifteen misconceptions involving Relativity, Gravitation and Cosmology are exposed, along with correctionsComment: 4 pages including front page. Replaced with enlarged text, and new titl

Realization of Einsteins Machian Program

The Einsteins Machian Program is here accomplished.Comment: This version differs from the published paper. arXiv admin note: text overlap with arXiv:1106.538