Generalization of weak and non-selective measurements to QFT

Determine whether and how weak measurement and non-selective measurement schemes from non-relativistic quantum mechanics generalize to relativistic quantum field theory, and establish interpretations that preserve their intended non-invasive characteristics within QFT.

Background

The author notes that certain measurement strategies (weak and non-selective measurements) in non-relativistic quantum mechanics may be interpreted as minimally disturbing the system while providing state information.

However, measurement theory in QFT is still under active development, and it is unclear whether these strategies carry over to QFT, or how they should be interpreted in the relativistic field-theoretic context. This uncertainty impacts arguments about state information and coarse-graining.