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- Newsgroups: sci.physics
- Path: sparky!uunet!sun-barr!ames!pacbell.com!well!sarfatti
- From: sarfatti@well.sf.ca.us (Jack Sarfatti)
- Subject: Kosher FTL typo correction &
- Message-ID: <Bt69vn.115@well.sf.ca.us>
- Sender: news@well.sf.ca.us
- Organization: Whole Earth 'Lectronic Link
- Date: Tue, 18 Aug 1992 09:18:59 GMT
- Lines: 23
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- Kosher typo correction&..
- z = |I2|^2/|I1|^2
-
- = [2|r|^2|t|^2-2|r|^2|t|^2 sinB]/[|t|^4+|r|^4+2|r|^2|t|^2 sinB]
-
- = 2x(1 - sinB)/[1 + x^2 + 2xsinB] this corrects typo error!
-
- Note on unitarity of the computation. One must take the original spin
- entangled pair state. Write it as an initial 4x4 spin density matrix
- M(i) in two-photon subspace of Fock space of quantum radiation theory.
- Then write the final state that is spin-disentangled as a final matrix
- M(f). The question then is, can we find a unitary 4x4 matrix U(i,f) such
- that
-
- M(f) = U*(f,i)M(i)U(i,f)
-
- where U*(f,i)U(i,f) = U(i,f)U*(f,i) = unit 4x4 matrix
-
- I will do this. Maybe use MATHEMATICA.
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-