Searcharxiv⌕ Search

arXiv subjects

B. G. Sidharth

Publications and source records attributed to B. G. Sidharth.

At least 109 records · Page 6Linked to original sources
arXiv2000

From the Neutrino to the Edge of the Universe

Two recent findings necessitate a closer look at the existing standard models of Particle Physics and Cosmology. These are the discovery of Neutrino oscillation, and hence a non zero mass on the one hand and, on the other, observations of distant supernovae which indicate that contrary to popular belief, the universe would continue to expand for ever, possibly accelerating in the process. In this paper it is pointed out that relatively recent studies which indicate a stochastic, quantum vacuum underpinning and a fractal structure for space time, reconcile both of the recent observations, harmoniously.

physics.gen-ph↗
arXiv2000

The Emergence of the Planck Scale

In this paper we first observe some interesting parallels between Planck scale considerations and elementary particle Compton wavelength scale considerations, particularly in the context of Wheeler's space time foam and a space time arising out of a stochastic random heap of elementary particles discussed in previous papers. These parallels lead to a semi qualitative picture which shows how the short lived Planck scale arises from the Compton wavelength considerations.

physics.gen-ph↗
arXiv2000

Further Effects of Varying G

The correct perihelion precession was recently deduced within the frame work of a time varying Gravitational constant G. Here, we deduce also the observed gravitational bending of light and flattening of galactic rotational curves.

physics.gen-ph↗
arXiv1999

The Scaled Universe

It is shown that the mysterious quantum prescription of microphysics has analogues at the scale of stars, galaxies and superclusters, the common feature in all these cases being Brownian type fractality. These considerations are shown to lead to pleasingly meaningful results in agreement with observed data.

physics.gen-ph↗
arXiv1999

Space Time as a Random Heap

In this paper, we demonstrate how space-time is, rather than a differentiable manifold, a Random Heap, and how this ties up with fractal dimension 2 of a Quantum Mechanical path. In this light, we can see that there is a harmonious convergence between the stochastic approach of Nelson and the de Broglie-Bohm approach. These considerations are shown to lead to the emergence of special relativity and Quantum Mechanics.

physics.gen-ph↗
arXiv1999

Dimensionality and Fractals

In this paper we first show that the usual three dimensionality of space, which is taken for granted, results from the spinorial behaviour of Fermions, which constitute the material content of the universe. It is shown that the resulting three dimensionality rests on two factors which have been hitherto ignored, viz., a Machian or holistic property and the stochastic underpinning of the universe itself. However the dimensionality is scale dependent in the sense that at very large scales, or at very small scales, we encounter a different dimensionality, as indeed is borne out by observation and experiment. For example the large scale structures in the universe are cellular in nature on the one hand, and we encounter fractional charges and handedness at very small scales. Finally it is shown how fractal dimensions can emerge and as an illustrative example it is shown how this could explain the magnetism of objects like Planets on the one hand and White Dwarf stars and Pulsars on the other.

physics.gen-ph↗
arXiv1999

The Fractal Universe: From the Planck to the Hubble Scale

We examine the fractal structure of the physical universe from the large scale to the smallest scale, including the phenomenon of fractal scaling. This is explained in terms of a stochastic underpinning for the laws of physics. A picture in pleasing agreement with experiment and observation at all scales emerges, very much in the spirit of Wheeler's "Law Without Law". It is argued that our depiction of the universe is akin to a broad brush delineation of a jagged coastline, the Compton wavelength being comparable to the thickness of the brush strokes.

physics.gen-ph↗
arXiv1999

Towards the Unification of Fundamental Interactions

Recent observations of distant supernovae show that the universe, contrary to popular belief, is expanding for ever. Similarly, recent experiments at the Superkamiokande facility demonstrate that the Neutrino has a non vanishing mass. Both these discoveries necessitate, at the very least, a re-examination of conventional theories-the Big Bang Theory and the Standard Model. On the other hand, neither has quantum gravity yielded the desired results, nor can String Theory be taken as the last word. We briefly examine this scenario, and in this light consider the recent description of Fermions in terms of the Kerr-Newman metric and the related model of Fluctuational Cosmology. All this is not only consistent with known physics including the latest results alluded to, but also explains hitherto inexplicable empirical facts like the handedness of the Neutrino or the large number relations of Cosmology and so on. It is shown that this scheme leads to a unified description of the fundamental interactions. At the same time, pleasingly, we recover the usual quark picture at the Compton wavelength scale and the Big Bang scenario at the Planck scale.

physics.gen-ph↗
arXiv1999

Fermi Temperature Magnetic Effects

Recent results than an assembly of Fermions below the Fermi temperature would exhibit anamolous semionic behaviour are examined in the context of assoociated magnetic fields.

physics.gen-ph↗
arXiv1999

A Brief Note on Jupiter's Magnetism

A recent model which gives the contribution of the earth's solid core to geo magnetism is seen to explain Jupiter's magnetism also.

physics.gen-ph↗
arXiv1999

Magnetism of Neutron Stars and Planets

It is shown in this paper that recent results that below the Fermi temperature, Fermions obey anomalous semionic statistics, could explain such apparently diverse phenomena as the magnetism of Pulsars and White Dwarfs on the one hand and earth like planets, on the other.

physics.gen-ph↗
arXiv1999

A New Theory of Geomagnetism

It is pointed out, that in the light of recent results on the semionic or anomalous behaviour of electrons below the Fermi temperature, the solid core of the earth which has been ignored so far, would contribute significantly to Geomagnetism and help explain the puzzling magnetic reversals.

physics.gen-ph↗
arXiv1999

Large Numbers, Galactic Rotation and Orbits

The time variation of the gravitational constant G in the recently discussed large number cosmologies accounts for the galactic rotational velocity curves without invoking dark matter and also for effects like the precession of the perhelion of Mercury.

physics.gen-ph↗
arXiv1999

Effects of Varying G

We consider two cosmologies which give an inverse time dependance for the gravitational constant G, and show that we can recover the correct value of the perhelion precession and anomalous inward radial accelerations, amongst other things.

astro-ph↗
arXiv1999

Galaxies and Superclusters

In this brief note, we would like to point out that large-scale structures like galaxies and superclusters would arise quite naturally in the universe.

astro-ph↗
arXiv1999

Galactic Rotation and Large Scale Structures

On the basis of a recent cosmological model, the puzzle of galactic rotational velocities at their edges is explained without invoking dark matter. A rationale for the existence of structures like galaxies and superclusters is also obtained.

astro-ph↗