Radiative capture in the big bang and the Sun

The past decade has seen a variety of operating modifications for Simulated Moving Bed (SMB) processes, including Three-Zone, VARICOL, and PowerFeed. In recent studies, we have shown that these can all be embedded within a superstructure optimization problem with timevariant flow rates. Moreover, the resulting dynamic optimization problem has yielded a number of interesting and useful insights ...

ANKIND HAS ALWAYS been fascinated with looking back in time. Historians and archaeologists use historical records and artifacts to trace back the evolution of mankind. Biologists use evolutionary theory to describe the development of life on Earth. The Earth is relatively young by astronomical standards, about 4.6 billion years, and the Universe is even older. It is believed that the Universe w...

For two decades the hot big-bang model as been referred to as the standard cosmology – and for good reason. For just as long cosmologists have known that there are fundamental questions that are not answered by the standard cosmology and point to a grander theory. The best candidate for that grander theory is inflation + cold dark matter; it can extend our understanding of the Universe back to ...

We present the results of a detailed study of how isocurvature axion fluctuations are converted into adiabatic metric perturbations through axion decay, and discuss the constraints on the parameters of pre-big bang cosmology needed for consistency with present CMB-anisotropy data. The large-scale normalization of temperature fluctuations has a non-trivial dependence both on the mass and on the ...

We construct exact, entropy satisfying shock wave solutions of the Einstein equations for a perfect fluid which extend the Oppeheimer-Snyder (OS) model to the case of non-zero pressure, inside the Black Hole. These solutions put forth a new Cosmological Model in which the expanding Friedmann-Robertson-Walker (FRW) universe emerges from the Big Bang with a shock wave at the leading edge of the e...

We apply the phenomenological model used to explain the abundances of Fe and r-process elements in very metal-poor stars in the Galaxy to [Fe/H] of damped Lya systems. It is assumed that the first stars that formed after the big bang were very massive and that they promptly enriched the interstellar medium to , at which [Fe/H] ∼ 23 metallicity the formation of normal stars took over. Subsequent...

We introduce some algebraic geometric models in cosmology related to the “boundaries” of space-time: Big Bang, Mixmaster Universe, Penrose’s crossovers between aeons. We suggest to model the kinematics of Big Bang using the algebraic geometric (or analytic) blow up of a point x. This creates a boundary which consists of the projective space of tangent directions to x and possibly of the light c...