PeterDonis's latest activity

In the sense that physicists, particularly those working on quantum gravity, are considering models that do not treat spacetime as...

Ontology is philosophy, regardless of whether the philosophy is a philosophy about physical systems or not. Physics is a science...

That potential, if you try to think of it as valid for all ##r## out to infinity, is an idealization and never actually happens, just as...

Hi, and welcome to PF! It would help if you could give some specific references to where you have read this. However, I suspect what...

Yet, both ##\nu## and ##E## are continuous quantities unless I’ve missed a memo.

You say that there is zero obervational support for continuous space-time, but it is the same for discrete one. You seem to be convinced...

No, this is not true. Some do, but not all. On the contrary, every observation which is correctly predicted by a theory which uses...

Ontology is philosophy, not physics. No it's not. Everyone knows GR can't be the whole story. There's an explicit singularity in the...

PPS you can use calculus on population studies, for example, even though an animal or human population is ultimately discrete. You...

It isn't. No one has found a way to make a discrete theory work. The continuum is simpler mathematically and thereby the default...

Discreteness of what, though? Let's take the cases you give: Even leaving aside that there are arguments in the literature against the...

All this depends on where you set the "zero point" of energy--and you've implicitly made different choices for the two cases you...

And with that, this thread is closed. Thanks to all who provided good responses.

And when the universe was in this state, it was also expanding very, very rapidly. It was nothing like a black hole or a white hole...

We have mathematical models, the ones you are relying on when you talk about white holes at all. They look nothing like the FLRW...