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Evangelos Chaliasos

Publications and source records attributed to Evangelos Chaliasos.

At least 19 recordsLinked to original sources
arXiv2017

The anti-Einstein equations

As we know, from the Einstein equations the vanishing of the four-divergence of the (symmetric) energy-momentum tensor follows. This is the case because the fourdivergence of the Einstein tensor (which is also symmetric) vanishes identically. Inverselly, we find that from the vanishing of the four-divergence of the energymomentum tensor (consisting in the general case of both symmetric and antisymmetric parts) not only the Einstein equations follow (concerning the symmetric part), but also the so-named anti-Einstein equations (concerning the antisymmetric part). These equations must be considered as complementary to the Einstein equations. Also, while from the Einstein equations the energy density (or the pressure) can be found (without using an equation of state), from the vanishing of the four-divergence of the (symmetric) energy-momentum tensor the pressure (or the energy density) can also be found, without having to use an additional (but arbitrary) equation of state.

physics.gen-ph↗
arXiv2012

The rotation of galaxies as a consequence of a rotation of the Universe

Assuming a suitable rotation of the Universe as a whole, we can attribute the rotation of galaxies to it. Using Lagrangian Mechanics we then can find the equations governing the rotation of a galaxy. We find in this way the azimuthal equation, and we find its first integral. Then we derive from it the law of differrential rotation of galaxies, and we plot it. We also present the resulting flat rotation curve, which is found to resemble remarkably the observed rotation curves.

physics.gen-ph↗
arXiv2012

The spiral structure of galaxies

We start from the author's metric for a rotating and accelerating Universe and we calculate the force acting on a particle in it. This force consists of two parts: one is derived from a potential, and the other describes a Coriolis force coming from the overall rotation of the Universe. We then write down the equations of motion, and we solve them analytically in the Newtonian approximation. The result has to describe in particular a spiral arm. It gives right a logarithmic helix, as it has been found empirically to be the case for our Galaxy (in particular).

physics.gen-ph↗
arXiv2009

The rotating and accelerating Universe

An attempt is made to explain the spiral structure of spiral galaxies through a possible rotation of the Universe. To this end, we write down a possible form of the metric, and we calculate the necessary quantities (Rik, Tik, ...) in order to form the Einstein equations. We find the two Einstein equations pertaining to the Robertson-Walker metric and no rotation at all in this way, if we assume p+e not= 0. There are introduced then two suitable rotational motions in the universe, and we try to generalize again the Robertson-Walker metric in this way. The result is again null, since it is found that the corresponding angular velocities must vanish, for p+e not= 0. A third attempt is finally done, without restricting ourselves to generalize any existing cosmological model. We introduce again two suitable rotational motions, and we form the appropriate Einstein equations. After solving them, we find that the two rotations, corresponding to the usual rotations on a torus, dictate again the equation of state p+e = 0. This solution is a steady state one, and it describes naturally the observationally discovered acceleration of the Universe (1998), without a cosmological constant and the ambiguous dark energy.

astro-ph↗
arXiv2008

Classical analog of spin in 7 and in 10 dimensions

Extra dimensions are introduced: 3 in Classical Mechanics and 6 in Relativistic Mechanics, which represent orientations, resulting from rotations, of a particle, described by quaternions, and leading to a 7-dimensional, respectively 10-dimensional, world. The concept of spin is thus defined in both cases, which results to be different from angular momentum. It leads to the known concept of Quantum Mechanical spin in both cases. In particular, application of these new ideas to (Relativistic) Quantum Mechanics, leads to quantization of energy levels in free electrons, which could be in principle detectable via their spectrum, confirming the theory.

physics.gen-ph↗
arXiv2006

Cosmological implications of the new metric for an accelerating expanding, and doubly rotating Universe

We give the correct interpretation of the new metric, found lately by the author. This metric results as an exact solution of the Einstein field equations, without the cosmological constant. The new feature is the introduction, from the beginning, of two rotations attributed to the Universe. As a result also an expanding, and indeed in accelerating rate, Universe is obtained. Thus dark energy is not necessary at all. We explore some properties of this Universe in the present paper. In particular, all old properties of the Universe concerning the Hubble law remain in a modified way, implying anisotropy. Besides, we explore the validity of the Ryle-Clarke effect, which is verified, and we find the correct age of the Universe. Finally, the resulting shape of the Universe is examined, and it is found to be hypertoroidal.

physics.gen-ph↗
arXiv2006

A restoration in the time-symmetric theory and associated new results

The concept of absorption of a photon moving backwards in time is reexamined, and it is found that its interpretation as absorption is wrong, its original interpretation rather as an emission being restored. The result is that the anticosmos is invisible rather than indistinguishable from the cosmos, and as such it is qualitatevely a candidate for constituting the dark matter. Newton´s law of gravitation is then generalized to refer either to matter (of the cosmos) and/or antimatter (of the anticosmos), and quantitatevely is found for the anticosmos to constitute the dark matter, as being (absolutely) equal in ammount of antimatter to the ammount of matter in the cosmos.Finally, a mechanism of gravitational repulsion from antimatter is proposed to explain the observed deceleration of Pioneer 10 and Pioneer 11, and an analytical way is exposed to calculate the position, as well as its (anti-)mass, of the responsible anti-body.

astro-ph↗
arXiv2005

Two cosmological models, the age of the Universe, and dark energy

The prevailing cosmological model with the lambda-term, in which the space is flat, is studied (section 1). The corresponding age of the Universe (t0) is calculated (assuming a Hubble constant consistent with the measurements of the Hubble telescope), as well as the deceleration parameter (q0). The latter is found negative, showing an accelerating Universe, but the former is insufficient to account for the actually estimated value. Nevertheless, with more recent values of the parameters involved, this model actually gives a result consistent with the estimated value. But there is a severe defect in the prevailing model, concerning the so-called dark energy, necessary to be introduced. Then, another model without the lambda-term, and based on the time-symmetric theory of the author, is studied (section 3), after an introduction to this theory (section 2). In this model the space is open, but the overall space-time is flat. It is not accelerating (it retains a constant rate of expansion). In this model, with q0 = 0, an age of the Universe results, which is consistent again, within the limits of accuracy, with the estimated value. But the great advantage of this model is that it does not require at all the existence of the ambiguous dark energy.

astro-ph↗
arXiv2005

Standing waves in the Universe

At first, a review of our knowledge on the distribution of galaxies at large-scale, leading to a foam-like large-scale structure of the Universe, is presented in the Introduction. Then, it is shown how, according to the present theory for the formation of superclusters, wave scalar perturbations of the same frequency traveling in opposite directions give rise to standing waves, which cause a motion of the cosmic material towards the nodes, resulting in the concentration of the cosmic material around the nodes. Generalizing this effect to two (three) dimensions, the cosmic material is concentrated around the node lines (node surfaces). It is proposed that the three-dimensional effect is responsible for the foam-like large-scale structure of the Universe.

physics.gen-ph↗
arXiv2005

A resolution of the Loschmidt paradox on the Boltzmann H Theorem

A resolution of the Loschmidt paradox on the Boltzmann H theorem is proposed, based on some new concepts concerning motion backwards in time. The key to this resolution, taken from our interpretation of motion backwards in time, is the associated notion of negative mass, attributed to particles moving backwards in time, which we call retro particles, or simply retrons.

physics.gen-ph↗
arXiv2005

The Kramers-Kronig relations for light moving backwards in time

The recent discovery of light moving backwards in time, when it propagates in a suitable dispersive medium, obliges us to reexamine the Kramers-Kronig relations. In their usual form, they are dealing with usual light (moving forward in time), and they are a consequence of causality. In a similar fashion, we derive the appropriate form of these relations for light moving backwards in time, starting, instead of causality, from a principle of anti-causality, appropriate to such a light.

physics.gen-ph↗
arXiv2005

Motion backwards in time? A second example

It is a striking result the one found by Wang, Kuzmich & Dogariu 1 (see also 2) experimentally last year, that a pulse of light, entered into an atomic caesium (Cs) vapour cell, appeared at the exit before its entrance (!) by 62 nanoseconds. It has to be mentioned that the shape of the pulse was maintained (cf. fig. 4 of 1), so that its peak was not shifted forward inside the pulse. Thus the explanation that the peak of the pulse was advanced at the exit, with the result of emerging there before the entrance of the peak of the incident pulse, does not apply.

physics.gen-ph↗
arXiv2005

Perturbations in a plasma

The perturbations of a homogeneous non-relativistic two-component plasma are studied in the Coulomb gauge. Starting from the solution found [2] of the equations of electromagnetic self consistency in a plasma [1], we add small perturbations to all quantities involved, and we enter the perturbed quantities in the equations, keeping only the first order terms in the perturbations. Because the unperturbed quantities are solutions of the equations, they cancel each other, and we are left with a set of 12 linear equations for the 12 perturbations (unknown quantities). Then we solve this set of linearized equations, in the approximation of small ratio of the masses of electrons over those of ions, and under the assumption that the plasma remains homogeneous.

physics.plasm-ph↗
arXiv2005

Self-consistent resonance in a plasma

As an application of the solution of the equations of electromagnetic self-consistency in a plasma, found in a previous paper, the study of controlled thermo-nuclear fusion is undertaken. This study utilizes the resonance which can be developed in the plasma, as indicated by the above solution, and is based to an analysis of the underlying forced oscillation under friction. As a consequence, we find that, in this way, controlled thermonuclear fusion seems now to be feasible in principle. The treatment is rather elementary, and it may serve as a guide for more detailed calculations.

physics.plasm-ph↗
arXiv2005

The modified Magnetohydrodynamic equations

After finding the really self-consistent electromagnetic equations for a plasma, we proceed in a similar fashion to find how the MHD equations have to be modified accordingly. Substantially this is done by replacing the "Lorentz" force equation by the correct (in our case) force equation. Formally we have to use the vector potential instead of the magnetic field intensity.The appearance of the formulae presented is the one of classical vector analysis. We thus find a set of eight (8) equations in eight (8) unknowns, as previously known concerning the tradditional MHD equations.

math-ph↗