Re: Quantum theory of measurement
From: Ben Goertzel The paradox is as follows: One does the EPR thing of creating two particles with opposite spin. [...] More or less, it is the experiment by Birgit Dopfer (pdf on this page, unfortunately just in German) http://www.quantum.univie.ac.at/publications/thesis/
Re: Quantum theory of measurement
Hi Hal, After glancing over that paper it seems to me that Badagnani does not distinguish between classical and quantum forms of information. I strongly suspect that that is the reason why he thinks his idea would work. Onward! Stephen - Original Message - From: Hal Finney [EMAIL PROTECTED] To: everything-list@eskimo.com Sent: Wednesday, October 12, 2005 9:59 PM Subject: RE: Quantum theory of measurement Now that you are experts on this, try your hand on this FTL signalling device, http://arxiv.org/abs/quant-ph?0204108. The author, Daniel Badagnani, is apparently a genuine physicist, http://cabtep5.cnea.gov.ar/particulas/daniel/pag-db.html. Hal Finney
Re: Quantum theory of measurement
Well, as you can see here: http://cabtep5.cnea.gov.ar/particulas/daniel/curri/curreng.html He isn't very experienced yet. I know of some experienced professors of have made worse mistakes :) So, what goes wrong? Well, you don't get an interference pattern at one end even if you don't detect the photon at the other end. To see this, just write down the two particle state and add the phase shifts. If the detectors on the other sides are off, then the two contributions corresponding to the photon being detected at some position z consist of two orthogonal terms; one term correpsonds to the other photon in pipe 1 and the other for that photon in pipe 2 Suppose that you add a plate to detect the photon on that side as well. Then the probability that the photon at one end is detected at position z1 and the other is detected at z2 does contain an interference term of the form: Cos[delta1(z1) + delta2(z2)] If you don't detect where photon 2 is absorbed you have to integrate over z2 and the interference term vanishes. To see an interference term you must keep z2 fixed. This means that you must consider only those photons for which the entangled partners were detected at at some fixed z2. But this means that this value must be communicated by the observer there. - Original Message - From: Hal Finney [EMAIL PROTECTED] To: everything-list@eskimo.com Sent: Thursday, October 13, 2005 03:59 AM Subject: RE: Quantum theory of measurement Now that you are experts on this, try your hand on this FTL signalling device, http://arxiv.org/abs/quant-ph?0204108. The author, Daniel Badagnani, is apparently a genuine physicist, http://cabtep5.cnea.gov.ar/particulas/daniel/pag-db.html. Hal Finney
Re: ROSS MODEL OF THE UNIVERSE - The Simplest Yet Theory of Everything
Le 11-oct.-05, à 01:46, John Ross a écrit : Because there is only one particle (and its anti-particle) and one force from which the entire universe is built. How could there be anything simpler? 0 particles and 0 forces, no time nor spaces but a web a overlapping turing machines' dreams emerging from addition and multiplication ... John, if you want your theory being a TOE, don't forget to address the mind body problem, and to be clear on all your assumptions (ontology, epistemology). Now to be honest I have no idea how neutrinos could be photons. If you thrust your idea try (at least) to write a paper with some details. Bruno http://iridia.ulb.ac.be/~marchal/
Re: ROSS MODEL OF THE UNIVERSE - The Simplest Yet Theory of Everything
Very good! If we ever get around to making a FAQ for this group, this link should be right up front. Cheers On Fri, Oct 14, 2005 at 12:18:19AM +0200, Saibal Mitra wrote: You clearly forgot to read this: http://insti.physics.sunysb.edu/~siegel/quack.html -- *PS: A number of people ask me about the attachment to my email, which is of type application/pgp-signature. Don't worry, it is not a virus. It is an electronic signature, that may be used to verify this email came from me if you have PGP or GPG installed. Otherwise, you may safely ignore this attachment. A/Prof Russell Standish Phone 8308 3119 (mobile) Mathematics0425 253119 () UNSW SYDNEY 2052 [EMAIL PROTECTED] Australiahttp://parallel.hpc.unsw.edu.au/rks International prefix +612, Interstate prefix 02 pgpexEDhwSlrL.pgp Description: PGP signature
