**Matti Pitkänen** (*matpitka@pcu.helsinki.fi*)

*Sun, 21 Nov 1999 18:00:08 +0200*

**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ]**Next message:**Hitoshi Kitada: "[time 1017] Re: [time 1013] [Fwd: Simpson's Paradox and Quantum Entanglement]"**Previous message:**ca314159: "[time 1015] Decoherence and distinguishment"**In reply to:**Stephen Paul King: "[time 1009] [Fwd: Simpson's Paradox and Quantum Entanglement]"

Apply Quantum Principle with Caution

----- Original Message -----

From: Stephen Paul King

To: Time List

Sent: Sunday, November 21, 1999 5:12 PM

Subject: [time 1014] Apply Quantum Principle with Caution

Hi Stephen and all,

it seems that experimentalists begin to take critical attitudes on the basic interpretation

of quantum theory. Year or so ago an experimental proof for the failure of

Bohr's explanation of results of the double slit experiment in terms of uncertainty

principle was published. Now the classical-quantum correspondence principle is

questioned.

My conviction is that standard correspondence principle is a wrong manner to connect

quantum theory to classical theory. In quantum field theory saddle point approximation in which

functional integral is developed perturbatively around classical solutions of field equations

is assumed to give correspondence with classical field theory. This principle is however

empty since the functional integral does not exist mathematically. The principle fails

in case of fermions completely since no classical limit exists.

The basis failure is to think that classical theory is only an approximation.

As I have explained thousand and one times classical theory is essential part of

quantum TGD and I dare believe of quantum theory in general: the only manner

I know to realize this is quantum states as quantum histories identification.

An alternative interpretation is that quantum states in some sense provide

representation for the classical aspects of the world. Ehrenfest theorem stating

that averages for observables obey classical equations suggests this.

In TGD "ontogeny recapitulates phylogeny" principles statingg that the

concepts related to the quantum dynamics by quantum jumps at the level of

configuration space of three-surfaces correspond to the

concepts of the dynamics of classical spacetime surface, realizes the same idea.

Best,

MP

**Next message:**Hitoshi Kitada: "[time 1017] Re: [time 1013] [Fwd: Simpson's Paradox and Quantum Entanglement]"**Previous message:**ca314159: "[time 1015] Decoherence and distinguishment"**In reply to:**Stephen Paul King: "[time 1009] [Fwd: Simpson's Paradox and Quantum Entanglement]"

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