74 citations · 579 across the 34 of their papers we have counts for
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math-ph2018★ 10 cited
Anomalies in time-ordered products and applications to the BV-BRST formulation of quantum gauge theories
Markus B. Fröb
We show that every (graded) derivation on the algebra of free quantum fields and their Wick powers in curved spacetimes gives rise to a set of anomalous Ward identities for time-or…
gr-qc2018★ 10 cited
Approaches to linear local gauge-invariant observables in inflationary cosmologies
Markus B. Fröb, Thomas-Paul Hack, Igor Khavkine
We review and relate two recent complementary constructions of linear local gauge-invariant observables for cosmological perturbations in generic spatially flat single-field inflat…