Timeline for Measurement in 't Hooft Cellular Automation Interpretation (CAI)

Current License: CC BY-SA 4.0

15 events

when toggle format	what		by	license	comment
S Dec 20, 2020 at 23:14	history	bounty ended	warlock
S Dec 20, 2020 at 23:14	history	notice removed	warlock
Dec 20, 2020 at 23:13	vote	accept	warlock
Dec 18, 2020 at 13:16	answer	added	G. 't Hooft		timeline score: 12
Dec 18, 2020 at 3:00	history	tweeted			twitter.com/StackPhysics/status/1339767339982737409
Dec 18, 2020 at 0:11	answer	added	ReasonMeThis		timeline score: 5
Dec 16, 2020 at 18:24	comment	added	warlock		In CAI a measured stated = a classical state is, indeed, a macrostate, which is an ensemble of states. But in "ortodox" quantum mechanics a measured stated is a pure state in a basic case. This is not a big issue, because in CAI all template states, even pure, are ensembles. But details are not clear.
Dec 16, 2020 at 16:12	comment	added	Cream		Are you sure that this is a feature of the 't Hooft Cellular Automation Interpretation. Or could it be that by the macrostate you do not mean a pure state but an Ensemble of states, which should be described by a density matrix $\rho = \sum_i \|a_i><a_i\|$. Then, you obtain the expectation value of some pure $\|\psi\rangle$ through $Tr( \rho \|\psi\rangle\langle\psi\|) = \sum_i \|\langle a_i\|\psi\rangle\|^2$.
S Dec 15, 2020 at 15:18	history	bounty started	warlock
S Dec 15, 2020 at 15:18	history	notice added	warlock		Draw attention
Dec 13, 2020 at 23:52	history	edited	Urb		edited tags
Dec 13, 2020 at 22:52	history	edited	warlock	CC BY-SA 4.0	added 4 characters in body
Dec 13, 2020 at 21:28	history	edited	warlock	CC BY-SA 4.0	added 6 characters in body
Dec 13, 2020 at 15:24	history	edited	Qmechanic♦	CC BY-SA 4.0	edited tags; edited title
Dec 13, 2020 at 15:14	history	asked	warlock	CC BY-SA 4.0