A bstract Vasiliev's type A higher spin theories in AdS 4 have been conjectured to be dual to
the U (N) or O (N) singlet sectors in 3-d conformal field theories with N-component scalar …

Perturbative quantum field theory usually uses second quantisation and Feynman diagrams.
The worldline formalism provides an alternative approach based on first quantised particle …

A bstract In the first-quantised worldline approach to quantum field theory, a long-standing
problem has been to extend this formalism to amplitudes involving open fermion lines while …

We present a new particle model that generalize for constant curvature space an infinite spin
particle in flat space. The model is described by commuting Weyl spinor additional …

A bstract The\(\mathcal {N}\)= 4 supersymmetric spinning particle admits several consistent
quantizations, related to the gauging of different subgroups of the SO (4) R-symmetry on the …

A bstract We obtain a manifestly background independent BRST quantization of
the\(\mathcal {N}= 4\) supersymmetric spinning particle. We show that nilpotency of the …

We present an extension to arbitrary dimensions of a worldline path integral approach to
one-loop quantum gravity, which was previously formulated in four spacetime dimensions …

We study the propagator of a colored scalar particle in the background of a non-Abelian
gauge field using the worldline formalism. It is obtained by considering the open worldline of …

We construct a spinning particle that reproduces the propagation of the graviton on those
curved backgrounds which solve the Einstein equations, with or without cosmological …

Conformal higher spin (CHS) fields, yet being non unitary, provide a remarkable example of
a consistent interacting higher spin theory in flat space background, that is local to all orders …