367 citations · 3.5k across the 73 of their papers we have counts for
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Effective action in a higher-spin background
Xavier Bekaert, Euihun Joung, Jihad Mourad
We consider a free massless scalar field coupled to an infinite tower of background higher-spin gauge fields via minimal coupling to the traceless conserved currents. The set of Ab…
Higher spin interactions with scalar matter on constant curvature spacetimes: conserved current and cubic coupling generating functions
Xavier Bekaert, Elisa Meunier
Cubic couplings between a complex scalar field and a tower of symmetric tensor gauge fields of all ranks are investigated on any constant curvature spacetime of dimension d>2. Foll…
How higher-spin gravity surpasses the spin two barrier: no-go theorems versus yes-go examples
Xavier Bekaert, Nicolas Boulanger, Per Sundell
Aiming at non-experts, we explain the key mechanisms of higher-spin extensions of ordinary gravity. We first overview various no-go theorems for low-energy scattering of massless p…
Strong obstruction of the Berends-Burgers-van Dam spin-3 vertex
Xavier Bekaert, Nicolas Boulanger, Serge Leclercq
In the eighties, Berends, Burgers and van Dam (BBvD) found a nonabelian cubic vertex for self-interacting massless fields of spin three in flat spacetime. However, they also found…