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6 papers · 2 filters
QFT on curved spacetimes: axiomatic framework and examples
Klaus Fredenhagen, Katarzyna Rejzner
In this overview article we present a formalism suitable for constructing models of QFT's on curved spacetimes. The leading principle is the emphasis on local properties. It turns…
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…
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…
Viruses and Fullerenes - Symmetry as a Common Thread?
Pierre-Philippe Dechant, Jess Wardman, Tom Keef +1
We apply here the principle of affine symmetry to the nested fullerene cages (carbon onions) that arise in the context of carbon chemistry. Previous work on affine extensions of th…
Characterization of local observables in integrable quantum field theories
Henning Bostelmann, Daniela Cadamuro
Integrable quantum field theories in 1+1 dimensions have recently become amenable to a rigorous construction, but many questions about the structure of their local observables rema…
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…