6533b862fe1ef96bd12c6f14
RESEARCH PRODUCT
Structure of chromomagnetic fields in the glasma
Tuomas LappiTuomas LappiAdrian DumitruYasushi Narasubject
PhysicsNuclear and High Energy PhysicsWilson loopNuclear Theoryta114High Energy Physics::LatticeHigh Energy Physics::PhenomenologyFOS: Physical sciencesObservableExpectation valueInvariant (physics)GluonColor-glass condensateNuclear Theory (nucl-th)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Quantum electrodynamicsCritical exponentScalingdescription
The initial stage of a heavy ion collision is dominated by nonperturbatively strong chromoelectric and -magnetic fields. The spatial Wilson loop provides a gauge invariant observable to probe the dynamics of the longitudinal chromomagnetic field. We discuss recent results from a real time lattice calculation of the area-dependence of the expectation value of the spatial Wilson loop. We show that at relatively early times after the collision, a universal scaling as a function of the area emerges at large distances for very different initial conditions, with a nontrivial critical exponent. A similar behavior has earlier been seen in calculations of the gluon transverse momentum spectrum, which becomes independent of the initial spectrum of gauge fields. We also show the distribution of eigenvalues of the spatial Wilson loop and the fluctuations of its real and imaginary parts.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-07-31 | Nuclear Physics A |