Adjoint string breaking in the pseudoparticle approach
Christian Szasz, Marc Wagner
TL;DR
This paper uses the pseudoparticle approach to study SU(2) Yang-Mills theory, revealing confinement, string breaking, Casimir scaling, and gluelump masses, aligning qualitatively with lattice results.
Contribution
It demonstrates the pseudoparticle approach's effectiveness in capturing key nonperturbative phenomena in SU(2) Yang-Mills theory.
Findings
Fundamental charges exhibit linearly rising potential.
Adjoint charges show clear string breaking.
Results qualitatively agree with lattice simulations.
Abstract
We apply the pseudoparticle approach to SU(2) Yang-Mills theory and perform a detailed study of the potential between two static charges for various representations. Whereas for charges in the fundamental representation we find a linearly rising confining potential, we clearly observe string breaking, when considering charges in the adjoint representation. We also demonstrate Casimir scaling and compute gluelump masses for different spin and parity. Numerical results are in qualitative agreement with lattice results.
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