5 citations · 15 across the 16 of their papers we have counts for
9 papers · 1 filter
Higher spin Lagrangians from higher derivative diffeomorphisms
Will Barker, Dario Francia, Carlo Marzo +1
The covariant description of massless particles of arbitrary spin typically employs symmetric tensors of rank and rests on a local symmetry carried by symmetric tensor paramete…
Infrared foundations for quantum geometry II: Catalogue of all torsion-like theories including new ghost-tachyon-free cases
Will Barker, Carlo Marzo, Alessandro Santoni
The construction of consistent effective field theories in the infrared demands that models be defined by their underlying gauge symmetries, rather than by an arbitrary tuning of c…
Infrared foundations for quantum geometry I: Catalogue of totally symmetric rank-three field theories
Will Barker, Carlo Marzo, Alessandro Santoni
We systematically obtain all linear models which propagate a totally symmetric rank-three field without parity violation on a flat background. Each such model is defined exclusivel…
Can metric-affine gravity be saved?
Will Barker, Carlo Marzo, Alessandro Santoni
Like general relativity, metric-affine gravity should be a viable effective quantum theory, otherwise it is a mathematical curiosity without physical application. Assuming a pertur…
PSALTer: Particle Spectrum for Any Tensor Lagrangian
Will Barker, Carlo Marzo, Claire Rigouzzo
We present the PSALTer software for efficiently computing the mass and energy of the particle spectrum for any (e.g. higher-rank) tensor field theory in the Wolfram Language. The u…
Every Poincaré gauge theory is conformal: a compelling case for dynamical vector torsion
Will Barker, Michael Hobson, Anthony Lasenby +2
The Poincaré gauge theory (PGT) of gravity provides a viable formulation of general relativity (Einstein-Cartan theory), and a popular model-building framework for modified gravity…
Particle spectra of general Ricci-type Palatini or metric-affine theories
W. Barker, C. Marzo
In the context of weak-field metric-affine (i.e. Palatini) gravity near Minkowski spacetime, we compute the particle spectra in the simultaneous presence of all independent contrac…
Consistent particle physics in metric-affine gravity from extended projective symmetry
Will Barker, Sebastian Zell
It is well-known that the Einstein-Hilbert action exhibits a projective invariance in metric-affine gravity, generated by a single vector (just like diffeomorphisms). However, this…
Particle spectra of gravity based on internal symmetry of quantum fields
Will Barker
We examine the weak-field, zero-coupling limit of Yang--Mills gravity as recently formulated by Partanen and Tulkki, viewed as a free quantum field theory. In this approximation th…