88 citations · 329 across the 6 of their papers we have counts for
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gr-qc2010★ 58 cited
Coarse graining free theories with gauge symmetries: the linearized case
Benjamin Bahr, Bianca Dittrich, Song He
Discretizations of continuum theories often do not preserve the gauge symmetry content. This occurs in particular for diffeomorphism symmetry in general relativity, which leads to…
gr-qc2010★ 60 cited
Operator Spin Foam Models
Benjamin Bahr, Frank Hellmann, Wojciech Kamiński +2
The goal of this paper is to introduce a systematic approach to spin foams. We define operator spin foams, that is foams labelled by group representations and operators, as the mai…