RQI Seminar | Barbara Soda, Infinitesimal limit of teleportations

 We model equations of motion, such as the Schrodinger equation, i.e. the physics of first quantization, using a port-based teleportation protocol. The entanglement resource is found in a quantum field's vacuum, and the measurement needed for a teleportation protocol is found in the interaction between a piece of matter and the vacuum of a quantum field. In this way, we find an interesting mapping between second-quantized physics, and first quantized physics, pointing at an information-theoretic interpretation of the Planck constant. We will compare this result with similar results in holographic, AdS/CFT toy models.Abstract: Motivated by the frame independence of the Bekenstein-Hawking black hole entropy, and the possibility of it being fundamentally entanglement entropy, I will present a spacetime definition for the entanglement entropy of free quantum fields. This definition is a spectral formulation, conducive to frame independent regularization, and applicable to spacetimes with fundamental discreteness. I will then go on to show some example calculations in Rindler spacetime and discuss other applications.

Note: We encourage you to join us fifteen minutes early (at 10:45 am) for coffee and snacks, generously sponsored by the Department of Applied Mathematics.