Reconstructing confined particles with complex singularities
Yui Hayashi, Kei-Ichi Kondo
Abstract
Complex singularities have been suggested in propagators of confined particles, e.g., the Landau-gauge gluon propagator. We rigorously reconstruct Minkowski propagators from Euclidean propagators with complex singularities. As a result, the analytically continued Wightman function is holomorphic in the tube, and the Lorentz symmetry and locality are kept intact, whereas the reconstructed Wightman function violates the temperedness and the positivity condition. Moreover, we argue that complex singularities correspond to confined zero-norm states in an indefinite metric state space.
Topics & Concepts
PropagatorGravitational singularityMinkowski spaceMathematical physicsHolomorphic functionPhysicsEuclidean geometryLorentz transformationSingularityMathematicsPure mathematicsQuantum mechanicsMathematical analysisGeometryQuantum Chromodynamics and Particle InteractionsParticle physics theoretical and experimental studiesBlack Holes and Theoretical Physics