27 citations · 141 across the 13 of their papers we have counts for
9 papers · 1 filter
Investigations into Light-front Quartic Interactions for Massless Fields (I): Non-constructibility of Higher Spin Quartic Amplitudes
Anders K. H. Bengtsson
The dynamical commutators of the light-front Poincaré algebra yield first order differential equations in the momenta for the interaction vertex operators. The homogeneous so…
Quartic amplitudes for Minkowski higher spin
Anders K. H. Bengtsson
The problem of finding general quartic interaction terms between fields of higher helicities on the light-front is discussed from the point of view of calculating the corresponding…
A Riccati type PDE for light-front higher helicity vertices
Anders K. H. Bengtsson
This paper is based on a curious observation about an equation related to the tracelessness constraints of higher spin gauge fields. The equation also occurs in the theory of conti…
BRST Theory for Continuous Spin
Anders K. H. Bengtsson
Some puzzling aspects of higher spin field theory in Minkowski space-time, such as the tracelessness constraints and the search for an underlying physical principle, are discussed.…
Counterterms in Gravity in the Light-Front Formulation and a D=2 Conformal-like Symmetry in Gravity
Anders K. H. Bengtsson, Lars Brink, Sung-Soo Kim
In this paper we discuss gravity in the light-front formulation (light-cone gauge) and show how possible counterterms arise. We find that Poincare invariance is not enough to find…
Systematics of Higher-spin Light-front Interactions
Anders K. H. Bengtsson
The original cubic interaction terms for higher spin gauge fields in four dimensions and their reformulation using Fock space vertex operators is reviewed. As a new result, the com…