2009

Spectral sum rules for the quark-gluon plasma

Romatschke, Paul, Son, Dam Thanh

Understand

We derive sum rules involving the spectral density of the stress-energy tensor in N=4 super-Yang-Mills theory and pure Yang-Mills theory.

  • The sum rules come from the hydrodynamic behavior at small momenta and the conformal (in the case of N=4 SYM theory) or asymptotically free (as for the pure Yang-Mills theory) behavior at large momenta.
  • These sum rules may help constrain QGP transport coefficients obtained from lattice QCD.

Reading the bibliography…