Exact measurement schemes for local observables and the preparation of physical local product states

Abstract: This talk describes further developments in the framework for measurement in quantum field theory introduced by myself and Verch [Commun. Math. Phys. 378 (2020) 851-889 arXiv:1810.06512]. In particular, it will be shown in a class of theories that any local observable can be measured, and that two observers in spacelike separated laboratories can independently prepare desired physical states, which amounts to a constructive proof of the existence of physical local product states. I will aim to introduce the relevant background.

general relativity and quantum cosmologymathematical physicsquantum physics

Audience: advanced learners

( paper | video )

---

Tricontinental Quantum Fundamentals Seminar

Series comments: The Tricontinental Quantum Fundamentals Seminar (3C-QFS) is an online seminar series connecting researchers from Australia, Europe, and America. Our goal is to facilitate discussion between the three continents and bring together those working on foundational topics in relativistic quantum physics, covering but not limited to:

• Measurement, localisation, and causality in relativistic quantum theory
• Energy conditions and quantum inequalities
• Non-locality and observer-dependence of entanglement
• Quantum reference frames and symmetries in quantum theory
• Holography, AdS/CFT, and analogue gravity

For 3C-QFS, we wish to foster an inclusive community and promote open discussion by encouraging a casual atmosphere during the seminars.

The seminars are held online via Zoom, consisting of 40-60 minute talks followed by additional time for questions. We meet every three weeks on Tuesday, alternating between two times in order to connect research communities across two of the three continents.

For those unable to join the seminars live, talks are recorded and hosted on the 3C-QFS YouTube channel.

The seminar series is primarily for students and academics active in the foundations of physics. To sign up for the mailing list and join the seminars live, please complete the registration form on the 3C-QFS website.

---