72 citations · 389 across the 31 of their papers we have counts for
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Quantum fields and local measurements
Christopher J. Fewster, Rainer Verch
The measurement process is considered for quantum field theory on curved spacetimes. Measurements are carried out on one QFT, the "system", using another, the "probe" via a dynamic…
Quantum strong energy inequalities
Christopher J. Fewster, Eleni-Alexandra Kontou
Quantum energy inequalities (QEIs) express restrictions on the extent to which weighted averages of the renormalized energy density can take negative expectation values within a qu…
Probability distributions for the stress tensor in conformal field theories
Christopher J. Fewster, Stefan Hollands
The vacuum state -- or any other state of finite energy -- is not an eigenstate of any smeared (averaged) local quantum field. The outcomes (spectral values) of repeated measuremen…
A singularity theorem for Einstein-Klein-Gordon theory
Peter J. Brown, Christopher J. Fewster, Eleni-Alexandra Kontou
Hawking's singularity theorem concerns matter obeying the strong energy condition (SEC), which means that all observers experience a nonnegative effective energy density (EED), the…
The art of the state
Christopher J. Fewster
Quantum field theory on curved spacetimes lacks an obvious distinguished vacuum state. We review a recent no-go theorem that establishes the impossibility of finding a preferred st…