ChrisF's latest activity

That's a fair and important distinction. You're right — within ΛCDM, H(t) is time-varying and Λ is not, so any relationship built on H₀...

Fair correction — the multiple definitions are understood tools for encoding different observational relationships, not a flaw in the...

Primarily two: first, that the (1+z) factors applied to photon flux across the rungs of the distance ladder are correctly accounted for...

The measured present value — Milgrom's original observation is a₀ ~ cH₀ using the observed expansion rate. The connection to Λ is then...

Fair technical point — to be precise, the Standard Model is the SU(3)×SU(2)×U(1) gauge theory covering three forces. Gravity sits...

For you weirdoguy, we'll do it Barney style. The Standard Model has four forces. Three of them speak the same language. One doesn't...

● The closeness of a₀ and Λ-derived quantities isn't coincidence — it's been noted explicitly in the literature. Milgrom himself pointed...

A fair challenge, and worth being precise about. In Gaussian or natural units ε₀ and μ₀ don't appear explicitly — they are absorbed...

Re: The wrong turn of string theory: our world is SUSY at low energies Congratulations to arivero on the EPJC publication — the...

Re: Dynamical gravity from RG flow of the CFT boundary in AdS/CFT duality? The Sheikh-Jabbari paper is genuinely interesting because...

Re: Constructing a purely gravitational, nonlocal action that reproduces CDM cosmology Deffayet and Woodard are being admirably...

Re: whether to couple or not Hossenfelder's framing cuts to the heart of why hybrid approaches keep hitting this wall. The dilemma...

Re: All possible models to explain the hierarchy problem? The short answer is: not quite, and the reason why is instructive...

Re: Information or Particle First? Good question — and the answer the Standard Model actually gives might surprise you. In QFT...

Great question - and I genuinely wish I could contribute. I'd love to discuss it here on Physics Forums because honestly, this is...