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1. There is no explicit model for entanglement (or any other kind of many-particle correlation) in Brady's "sonon" model of an electron or in the A&B preprint.
2. As a corollary, the model is irreconcilable with each of the myriad of experimental facts underlying our trust in the conventional quantum many-body theory (ie., Shcrodinger equation in Fock space). Explicitly:
a. Spectrum of any atom beyond hydrogen.
b. Superconductivity (from which Josephson-effect-based QIP is derived).
c. Anomalous value of electron's gyromagnetic ratio (which by itself long ago has fundamentally invalidated any single-particle approximation for the physical electron, including Dirac equation which Brady connects his model to).
d. Exchange interaction and ferromagnetism.
e. The Standard Model of particle physics.
3. Another corollary: in contrast to standard theory, A&B provide no alternative method to compute the outcome of any of Bell-inequality testing experiment. (The latter belong the same myriad of experimental keyholes that quantum theory has successfully passed through).
4. Brady's use of the historical name "fine structure constant" for his estimate of the squared dimensionless Coulomb charge of the "sonon" is misleading. There is no spin-orbit interaction in his model and hence no prediction for fine structure of atomic spectra.
http://seeking-mind.blogspot.com/2013/02/no-threat-to-quantum-cryptography-at.html
2. As a corollary, the model is irreconcilable with each of the myriad of experimental facts underlying our trust in the conventional quantum many-body theory (ie., Shcrodinger equation in Fock space). Explicitly:
a. Spectrum of any atom beyond hydrogen.
b. Superconductivity (from which Josephson-effect-based QIP is derived).
c. Anomalous value of electron's gyromagnetic ratio (which by itself long ago has fundamentally invalidated any single-particle approximation for the physical electron, including Dirac equation which Brady connects his model to).
d. Exchange interaction and ferromagnetism.
e. The Standard Model of particle physics.
3. Another corollary: in contrast to standard theory, A&B provide no alternative method to compute the outcome of any of Bell-inequality testing experiment. (The latter belong the same myriad of experimental keyholes that quantum theory has successfully passed through).
4. Brady's use of the historical name "fine structure constant" for his estimate of the squared dimensionless Coulomb charge of the "sonon" is misleading. There is no spin-orbit interaction in his model and hence no prediction for fine structure of atomic spectra.
http://seeking-mind.blogspot.com/2013/02/no-threat-to-quantum-cryptography-at.html