73 citations · 449 across the 58 of their papers we have counts for
5 papers · 1 filter
Avoiding superluminal propagation of higher spin waves via projectors onto W^2 invariant subspaces
Mauro Napsuciale, Mariana Kirchbach
We propose to describe higher spins as invariant subspaces of the Casimir operators of the Poincaré Group, P^{2}, and the squared Pauli-Lubanski operator, W^{2}, in a properly chos…
Lagrangians for invariant sub-spaces of the squared Pauli-Lubanski vector
G. Cabral, M. Kirchbach
We present an alternative formalism to the Rarita-Schwinger framework for the description of "has-been" higher spins at rest that avoids the Velo-Zwanziger problem.
Neutral Fermion Phenomenology With Majorana Spinors
M. Kirchbach, C. Compean, L. Noriega
We ask the question whether neutrino physics with momentum space Majorana spinors, the eigenvectors of the particle--antiparticle conjugation operator, C=iγ_2 K (with K standing fo…
Quantum states of indefinite spins: From baryons to massive gravitino
M. Kirchbach
I review theory and phenomenology of (K/2,K/2)*[(1/2,0)+(0,1/2)] states. First I make the case that the observed nucleon and Delta (1232) excitations (up to Delta(1600)) are exhaus…
Spin and Resonant States in QCD
M. Kirchbach
I make the case that the nucleon excitations do not exist as isolated higher spin states but are fully absorbed by (K/2,K/2)*[(1/2,0)+ (0,1/2)] multiplets taking their origin from…