152 citations · 2.3k across the 94 of their papers we have counts for
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math-ph2014★ 9 cited
Pure quasifree states of the Dirac field from the fermionic projector
Christopher J. Fewster, Benjamin Lang
We consider the quantised free Dirac field on oriented and globally hyperbolic ultrastatic slab spacetimes with compact spatial section and demonstrate how a gauge invariant, pure…
math-ph2014★ 15 cited
Dynamical locality of the free Maxwell field
Christopher J. Fewster, Benjamin Lang
We consider the non-interacting source-free Maxwell field, described both in terms of the vector potential and the field strength. Starting from the classical field theory on contr…
math-ph2014★ 13 cited
Locally covariant quantum field theory with external sources
Christopher J. Fewster, Alexander Schenkel
We provide a detailed analysis of the classical and quantized theory of a multiplet of inhomogeneous Klein-Gordon fields, which couple to the spacetime metric and also to an extern…