Spacetime geometry of spin, polarization, and wavefunction collapse

Charlie Beil (U of Graz)

Mar 14. 2023, 16:45 — 17:30

To incorporate quantum nonlocality into general relativity, I will introduce a new spacetime geometry where the points along the worldlines of dust particles are identified without contracting the worldlines to 0-dimensional points. This new geometry recently arose in the study of nonnoetherian coordinate rings in algebraic geometry. I will show that on such a spacetime, metrics are degenerate and tangent spaces have variable dimension. This variability then implies that dust particles are spin-1/2 fermions that satisfy the Born rule, where a projective measurement of spin corresponds to the actual projection of tangent spaces of different dimensions.

Further Information
Venue:
ESI Boltzmann Lecture Hall
Recordings:
Recording
Associated Event:
Non-regular Spacetime Geometry (Workshop)
Organizer(s):
Piotr T. ChruĊ›ciel (U of Vienna)
Melanie Graf (U Hamburg)
Michael Kunzinger (U of Vienna)
Ettore Minguzzi (U Florence)
Roland Steinbauer (U of Vienna)