A framework and explicit construction enables causal regularized measurements of spacetime-localized observables in bosonic QFT, with self-backreaction and induced future correlations.
A positive formalism for quantum theory in the general boundary formulation
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abstract
We introduce a new "positive formalism" for encoding quantum theories in the general boundary formulation, somewhat analogous to the mixed state formalism of the standard formulation. This makes the probability interpretation more natural and elegant, eliminates operationally irrelevant structure and opens the general boundary formulation to quantum information theory.
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hep-th 1years
2025 1verdicts
UNVERDICTED 1representative citing papers
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Causal measurement in quantum field theory: spacetime
A framework and explicit construction enables causal regularized measurements of spacetime-localized observables in bosonic QFT, with self-backreaction and induced future correlations.