It is argued that immense physical resources – for nonlocal communication, espionage, and exponentially-fast computation – are hidden from us by quantum noise, and that this noise is not fundamental… (More)

One of the central mysteries of quantum theory is that it seems to be fundamentally nonlocal – and yet the nonlocality cannot be used for practical signalling at a distance. As argued elsewhere… (More)

We study the origin of the Born probability rule ρ = |ψ| in the de BroglieBohm pilot-wave formulation of quantum theory. It is argued that quantum probabilities arise dynamically, and have a status… (More)

We reply to claims (by Deutsch, Zeh, Brown and Wallace) that the pilot-wave theory of de Broglie and Bohm is really a many-worlds theory with a superfluous configuration appended to one of the… (More)

We discuss how to embed quantum nonlocality in an approximately classical spacetime background, a question which must be answered irrespective of any underlying microscopic theory of spacetime. We… (More)

The hypothesis of quantum nonequilibrium at the big bang is shown to have observable consequences. For a scalar field on expanding space, we show that relaxation to quantum equilibrium (in de… (More)

We prove that all deterministic hidden-variables theories, that reproduce quantum theory for an ‘equilibrium’ distribution of hidden variables, give instantaneous signals at the statistical level for… (More)

We outline several proposals for astrophysical and cosmological tests of quantum theory. The tests are motivated by deterministic hidden-variables theories, and in particular by the view that quantum… (More)

We consider black-hole evaporation from a hidden-variables perspective. It is suggested that Hawking information loss, associated with the transition from a pure to a mixed quantum state, is… (More)

It is argued that the natural kinematics of the pilot-wave theory is Aris-totelian. Despite appearances, Galilean invariance is not a fundamental symmetry of the low-energy theory. Instead, it is a… (More)