19 citations · 42 across the 7 of their papers we have counts for
7 papers
Towards a Manifestly Causal Approach to Particle Scattering
Robert Dickinson, Jeff Forshaw, Ross Jenkinson +1
We introduce a new, probability-level approach to calculations in scalar field particle scattering. The approach involves the implicit summation over final states, which makes caus…
A new study of the Unruh effect
Robert Dickinson, Jeff Forshaw, Ross Jenkinson +1
We revisit the Unruh effect within a general framework based on direct, probability-level calculations. We rederive the transition rate of a uniformly accelerating Unruh-DeWitt mon…
Working directly with probabilities in quantum field theory
Robert Dickinson, Jeff Forshaw, Peter Millington
We present a novel approach to computing transition probabilities in quantum field theory, which allows them to be written directly in terms of expectation values of nested commuta…
Fock-space projection operators for semi-inclusive final states
Robert Dickinson, Jeff Forshaw, Peter Millington
We present explicit expressions for Fock-space projection operators that correspond to realistic final states in scattering experiments. Our operators automatically sum over unobse…
Probabilities and signalling in quantum field theory
Robert Dickinson, Jeff Forshaw, Peter Millington
We present an approach to computing probabilities in quantum field theory for a wide class of source-detector models. The approach works directly with probabilities and not with sq…
Negative-frequency modes in quantum field theory
Robert Dickinson, Jeff Forshaw, Peter Millington
We consider a departure from standard quantum field theory, constructed so as to permit momentum eigenstates of both positive and negative energy. The resulting theory is intriguin…
Manifest causality in quantum field theory with sources and detectors
Robert Dickinson, Jeff Forshaw, Peter Millington +1
We introduce a way to compute scattering amplitudes in quantum field theory including the effects of particle production and detection. Our amplitudes are manifestly causal, by whi…