F. I. Cooperstock

Evolution of the scale factor with a variable cosmological term

The evolution of the scale factor

The Influence of the Cosmological Expansion on Local Systems

a(t)

On the Total Energy of Open Friedmann-Robertson-Walker Universes

in Friedmann models (those with zero pressure and a constant cosmological term

A SINGULARITY-FREE COSMOLOGICAL MODEL WITH A CONFORMALLY COUPLED SCALAR FIELD

\ensuremath{\Lambda})

A cosmological field theory

is well understood, and elegantly summarized in the review of Felten and Isaacman [Rev. Mod. Phys. 58, 689 (1986)]. Developments in particle physics and inflationary theory, however, increasingly indicate that

PROBING THE GRAVITATIONAL GEON

\ensuremath{\Lambda}

Introducing Einstein’s General Relativity

ought to be treated as a dynamical quantity. We reexamine the evolution of the scale factor with a variable

THE NEW PLANCK SCALE: QUANTIZED SPIN AND CHARGE COUPLED TO GRAVITY

\ensuremath{\Lambda}

The essence of gravitational waves and energy

term, and also generalize the treatment to include nonzero pressure. New solutions are obtained and evaluated using a variety of observational criteria. Existing arguments for the inevitability of a big bang (i.e., an initial state with

THE CASE FOR UNQUANTIZED GRAVITY

a=0)