We introduce a set of consistency conditions on the S-matrix of theories of massless
particles of arbitrary spin in four-dimensional Minkowski space-time. We find that in most …

These notes comprise a part of the introductory lectures on Higher Spin Theory presented in
the Eighth Modave Summer School in Mathematical Physics. We construct free higher-spin …

A bstract We study the electromagnetic coupling of massless higher-spin fermions in flat
space. Under the assumptions of locality and Poincaré invariance, we employ the BRST-BV …

A bstract We investigate the cubic interactions of a massless higher-spin fermion with gravity
in flat space and present covariant 2− s− s vertices, compatible with the gauge symmetries of …

The cosmic singularity provides negligible evidence for creation in the finite past, and hence
theism. A physical theory might have no metric or multiple metrics, so a 'beginning'must …

Classical and quantum field theory provide not only realistic examples of extant notions of
empirical equivalence, but also new notions of empirical equivalence, both modal and …

We derive Einstein's equations from a linear theory in flat space-time using free-field gauge
invariance and universal coupling. The gravitational potential can be either covariant or …

If Einstein's equations are to describe a field theory of gravity in Minkowski spacetime, then
causality requires that the effective curved metric must respect the flat background metric's …

Recent work on the history of General Relativity by Renn et al. shows that Einstein found his
field equations partly by a physical strategy including the Newtonian limit, the …

An overlap between the general relativist and particle physicist views of Einstein gravity is
uncovered. Noether׳ s 1918 paper developed Hilbert׳ s and Klein׳ s reflections on the …