Warsaw Spacetime Colloquium: Elise Crull (7 January on Zoom)

On Friday, 7 January, Elise Crull (City University of New York) will give a talk titled “You’re a Good Man, Harvey Brown: Quantum Rods & Clocks from Decoherence” (abstract below).

The meeting will be online on Zoom (17:00-19:00 CET). If you have not registered yet, you can do so here.

You can address any inquiry to antonio.vassallo@pw.edu.pl.


Harvey Brown’s 2005 book Physical Relativity calls for the development of a constructive-theoretic (as opposed to principle-theoretic) interpretation of relativity: in short, for a quantum-dynamical description of rods and clocks. Significant issues, however, stand in the way of this project. For one, such an interpretation of GR will require carrying over the Strong Equivalence Principle from SR, and this is not trivial. For another, a quantum-dynamical GR is clearly in tension with the fact that the fields in Einstein’s field equations are classical.