Exploring the Tan contact term in Yang-Mills theory

Understand

Reliably computing the free energy in a gauge theory like QCD is a challenging and resource-demanding endeavor.

• As an alternative, we explore here the possibility to obtain the associated thermodynamic anomaly by exploiting its relation to the Tan contact.
• Optimally, this would reduce the determination of the free energy to a high-precision calculation of two-point correlators.
• We study this possibility using the lattice and functional methods and compare them to the expected behavior for the SU(2) Yang-Mills case.