Recent content by Edgar L Owen

All, Light cones are always shown with straight sides in textbooks but it seems to me they actually must curve inward and would eventually converge at the point of the big bang if we could see back that far. Thus going back any significant distance in time light cones should curve inward since...

Peter, Either space is something that has a shape or it isn't. GR suggests that it does have a shape. If something that has shape expands unevenly that should produce distortions in the regions of the uneven expansions. And since GR tells us that distortions in space are equivalent to...

Peter, The unitarity of quantum processes simply means that the sum of all probabilities of an event must equal 1. i don't see why that implies any time reversibility of quantum processes. Please explain. You say I should look at states rather than probability distributions. But one state...

Peter, Please explain how and why the expansion of the distance between galaxies is not equivalent to (the direct manifestation of) the Hubble expansion of space? Sure, I understand the universe can be modeled as homogeneous at large scales, but we are talking about galactic scales here...

Peter, It's accepted science that quantum processes in which exact decoherence values are randomly chosen from probability distributions are not time reversible to the probability distributions from which they were randomly chosen. And everything actually happens at the quantum level. Therefore...

Hi Peter, My understanding is that clock time does apply to photons but that the comoving clocks of photons just have no velocity in time. That's completely consistent with STc since all their combined c spacetime velocity is through space.. The question is whether STc is true or not, not...

It seems to me a possible explanation of the dark matter effect could be as follows: Thorne and Misner (p. 719 in Gravitation) note that the Hubble expansion is anisotropic. Empty space expands but the gravitationally bound space within galaxies doesn't expand. This should obviously produce...

All, As to the source of the arrow of time a known corollary of relativity is that everything continually moves through combined space and time at the speed of light. Call this the STc Principle or STc for short. This is a fundamental principle that makes relativity much easier to understand...