# Emergent-Quantum-Theory

Emergent quantum theory

### Book ordering information

My book on Quantum Theory as an Emergent Phenomenon'' was published by Cambridge University Press in 2004. It can be ordered from Cambridge University Press, 100 Brook Hill Drive, West Nyack, NY 10994-2133; phone 845-353-7500/800-872-7423

Current list of book addenda and errata

• After the book went to press, I learned from Pierre Hohenberg of a review by Tony Leggett that is relevant to the discussion of Chapter 6: "Testing the limits of quantum mechanics: motivation, state of play, prospect", A. J. Leggett, J. Phys.: Conden. Matter 14, R415 (2002).
• On pages 164 and 165, in the second lines of Eqs. (6.10b) and (6.10d), a factor of dt was omitted. This factor does appear in the first lines of the two equations. In the sentence immediately following Eq. (6.10d), spatially correlated'' should read spatially localized''.
• On page 188, line 6 from bottom, reduction time'' should read reduction rate''.
• An improved treatment of the anti-self-adjoint operator contribution to the fluctuation terms in the trace dynamics Ward identity is given in my paper arXiv:hep-th/0510120, published as J. Phys. A: Math. Gen. 39 (2006) 1397-1403. This paper clarifies the origin of the apparent inconsistency between two forms of this identity discussed in Eqs. (6.7a-d) on pages 161 and 162.
• On page 180, line 8 after Eq. (6.26), If M were significantly larger'' should read If M were significantly smaller''.
• On page 170, in Eq. (6.15b), there should be a second ] before dW_t^R.
• On page 167, the last line in Eq. (6.13c) should have an expectation E[ ] surrounding the double commutator.