The non-linear Glasma

Understand

We study the evolution of quantum fluctuations in the Glasma created immediately after the collision of heavy nuclei.

• It is shown how the presence of instabilities leads to an enhancement of non-linear interactions among initially small fluctuations.
• The non-linear dynamics leads to an enhanced growth of fluctuations in a large momentum region exceeding by far the originally unstable band.
• We investigate the dependence on the coupling constant at weak coupling using classical statistical lattice simulations for SU(2) gauge theory and show how these non-linearities can be analytically understood within the framework of two-particle irreducible (2PI) effective action techniques.