The Universal Wave Function -- A dubious concept?

[Alan Grayson]

When I studied QM, wf's were solutions of specific differential equations, such as S's equation. But S's equation is non-relativistic since it uses classical energy, and hence the energy operator derived from classical physics. So what differential equation exists from which we can solve to find something remotely approximating a universal wave function? Dirac's equation? Or do we just pull it out of the proverbial hat and move on? AG

[Brent Meeker]

On 2/15/2025 9:45 AM, Alan Grayson wrote:

When I studied QM, wf's were solutions of specific differential equations, such as S's equation. But S's equation is non-relativistic since it uses classical energy, and hence the energy operator derived from classical physics. So what differential equation exists from which we can solve to find something remotely approximating a universal wave function? Dirac's equation? Or do we just pull it out of the proverbial hat and move on? AG --

The New Minimal Standard Model
Hooman Davoudiasl, Ryuichiro Kitano, Tianjun Li, and Hitoshi Murayama
∗
School of Natural Sciences, Institute for Advanced Study, Einstein Drive, Princeton, NJ 08540, USA
(Dated: May 11, 2004)

We construct the New Minimal Standard Model that incorporates the new discoveries of physics beyond
the Minimal Standard Model (MSM): Dark Energy, non-baryonic Dark Matter, neutrino masses, as well as
baryon asymmetry and cosmic inflation, adopting the principle of minimal particle content and the most general
renormalizable Lagrangian. We base the model purely on empirical facts rather than aesthetics. We need only
six new degrees of freedom beyond the MSM. It is free from excessive flavor-changing effects, CP violation,
too-rapid proton decay, problems with electroweak precision data, and unwanted cosmological relics. Any
model of physics beyond the MSM should be measured against the phenomenological success of this model.




https://arxiv.org/pdf/hep-ph/0405097

Brent

[Alan Grayson]

It must be reeeal easy to calculate a probability applying Born's rule to that wf. AG 

[Alan Grayson]

On Saturday, February 15, 2025 at 3:32:14 PM UTC-7 Brent Meeker wrote:

CMIIAW, but this seems to be related to the Langrangian used in Langrangian Classical Mechanics, but not an operator or wf. I doubt the existence of a Universal Wave Function as the solution of some differential equation (Everett's creation). AG