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Covariant multipole expansion of local currents for massive states of any spin
Sabrina Cotogno, Cédric Lorcé, Peter Lowdon +1
We study the structure of scalar, vector, and tensor currents for on-shell massive particles of any spin. When considering higher values for the spin of the particle, the number of…
Universality of the Poincaré gravitational form factor constraints
Cédric Lorcé, Peter Lowdon
Relativistic spin states are convention dependent. In this work we prove that the zero momentum-transfer limits of the leading two form factors in the decomposition of the energy-m…
The generalised infrared structure of the gluon propagator
Shirley Weishi Li, Peter Lowdon, Orlando Oliveira +1
Gauge theory correlators are potentially more singular in the infrared than those in non-gauge theories. We determine the implications that these singularities have on the spectrum…
Poincaré constraints on the gravitational form factors for massive states with arbitrary spin
Sabrina Cotogno, Cédric Lorcé, Peter Lowdon
In this work we analyse the constraints imposed by Poincaré symmetry on the gravitational form factors appearing in the Lorentz decomposition of the energy-momentum tensor matrix e…
Structure of light front vacuum sector diagrams
Philip D. Mannheim, Peter Lowdon, Stanley J. Brodsky
We study the structure of scalar field light front quantization vacuum graphs. In instant time quantization both non-vacuum and vacuum graphs can equivalently be described by eithe…