timmdeeg's latest activity

Not the values of coordinate time ##t##--the values of proper time at that coordinate time ##t## that have elapsed for a comoving...

Of course, because the temperature ratio has to be equal to the ratio of scale factors, and the ratio of scale factors is the ratio by...

No, it's what you should expect of any cosmological model that makes it to the stage of getting published in a peer-reviewed journal. It...

I already answered this in post #2: that expansion factor is an observational fact, which all models must account for. So obviously it's...

That immediately makes me question the validity of the paper. The whole point of the equivalence principle, in each of its forms (weak...

No, because they share the notion of a scale factor, and with that the temperature ratio is the same as (actually, the inverse of) the...

So ##t## now isn't special. Now both models predict the same "amount" of accelerated expansion whereby the temperature ratio is 1100. If...

The point is that the ratio of scale factors is also the ratio of CMB temperatures. At recombination the temperature was about 3000K by...

Good point. And the values of ##t## might depend on where one lives, in a wall or in a void.

Yes, but isn't it astonishing that otherwise much different models predict this very same ratio of scale factors? Of course they have...

What I meant, saying "coincidence" : There are two models (one established and the other one speculative) which explain the measured...

In "Supernovae evidence for foundational change to cosmological models" they say Physically, it is motivated by an extension of...

No. The expansion factor of 1100 is based on data, not models--all models have to account for it somehow. Yes, that's how the different...

Thanks, got it.

"Supernovae evidence for foundational change to cosmological models" https://arxiv.org/pdf/2412.15143 The paper claims: We compare the...