PeterDonis's latest activity
-
PeterDonis replied to the thread High School Can gravitons be detected?.Where is this from? -
PeterDonis reacted to A.T.'s post in the thread High School Internal energy and gravitation with
Like.
This is obviously not specific enough. For example, kinetic energy is frame dependent, so you always have to provide the reference... -
PeterDonis replied to the thread Is mathematics invented or discovered?.After some cleanup, the thread is reopened. -
PeterDonis reacted to A. Neumaier's post in the thread Graduate Multiparticle Relativistic Quantum Mechanics in an external potential with
Like.
This very limited point of view was never my view. I repeatedly mentioned in other threads that in the context of extended media... -
PeterDonis reacted to A. Neumaier's post in the thread Graduate Multiparticle Relativistic Quantum Mechanics in an external potential with
Like.
Yes, that's what I thought. Therefore it seems that I am right that This is where relativistic quantum mechanics, though not... -
PeterDonis reacted to A. Neumaier's post in the thread Graduate Multiparticle Relativistic Quantum Mechanics in an external potential with
Like.
I never claimed that it is a fundamental dynamical theory. The words 'consistent' and 'fundamental' have a different meaning. The first... -
PeterDonis reacted to A. Neumaier's post in the thread Graduate Multiparticle Relativistic Quantum Mechanics in an external potential with
Like.
no relativistic QM models ??? There is a recent survey that tells quite a different story: Plessas, W. (2019). The Constituent-Quark... -
PeterDonis reacted to A. Neumaier's post in the thread Graduate Multiparticle Relativistic Quantum Mechanics in an external potential with
Like.
You should first read the survey article on relativistic multiparticle equations by Keister and Polyzou. You'll see that it is possible... -
PeterDonis reacted to A. Neumaier's post in the thread Graduate Consistency of Relativistic QM with
Like.
Talagrand is a mathematician who tried to understand standard relativistic QFT and then wrote his book about what he found. He is not... -
PeterDonis reacted to artis's post in the thread Graduate Black hole mass coupled to expansion -- astrophysical source of dark energy? with
Haha.
That definitely has a non zero coupling constant to the expansion of databases like arxiv. Since the digital age that expansion has been... -
PeterDonis reacted to Nugatory's post in the thread High School Theories about light and time near a black hole with
Like.
It has been tested. Google for the Hafele/Keating experiment, which directly measured the effect using clocks accurate enough that we... -
PeterDonis reacted to Ibix's post in the thread Undergrad Does the scale factor need to be normalized? with
Like.
We don't assume it. It follows from the Friedmann equations for the flat and open cases that ##\dot{a}^2>0## for all time, so ##a## is... -
PeterDonis reacted to Dale's post in the thread Graduate How to fix Relativistic QM so it's consistent? with
Like.
@ChrisF We appreciate the respect and the caution. We do not provide any form of pre publication support here. It needs to be published... -
PeterDonis replied to the thread Undergrad Linear vs rotary motion.But you still have to define what observer (or worldline, if you prefer), you are using to determine the "proper rotation rate". That... -
PeterDonis reacted to Jaime Rudas's post in the thread Undergrad Does the scale factor need to be normalized? with
Like.
I'm not sure I understand your point correctly, but it seems you might be confusing the expansion rate with the particle horizon growth...