Mass sum rule of hadrons in the QCD instanton vacuum
Ismaïl Zahed
Abstract
We briefly review the key aspect of the QCD instanton vacuum in relation to the quantum breaking of conformal symmetry and the trace anomaly. We use Ji's invariant mass decomposition of the energy momentum tensor together with the trace anomaly to discuss the mass budget of the nucleon and pion in the QCD instanton vacuum. A measure of the gluon condensate in the nucleon is a measure of the compressibility of the QCD instanton vacuum as a dilute topological liquid.
Topics & Concepts
PhysicsInstantonQCD vacuumQuantum chromodynamicsParticle physicsGluon condensateNucleonSum rule in quantum mechanicsInvariant massQuantum electrodynamicsGluonLattice QCDBlack Holes and Theoretical PhysicsParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle Interactions