Magnetic flux loops in high-energy heavy-ion collisions

I discuss the structure of longitudinal chromomagnetic fields which
develop in heavy-ion collisions. Rather than being homogeneous, Bz is
found to exhibit domain-like structures in the transverse plane. The
expectation values of spatial Wilson loops exhibit area law scaling
for radii larger than the inverse saturation momentum, indicating
uncorrelated magnetic flux fluctuations at such scales. The
corresponding spatial string tension is approximately invariant
under a Z(2) rotation of the SU(2) Wilson loops. I discuss the
failure of a naive perturbative expansion to reproduce area law
scaling and the role of magnetic screening.

Event Date: 
Tuesday, January 21, 2014 - 3:30pm
Event Location: 
Physics 298
Event Contact: 
Paul, Cristin
Event Contact Email: 
Event Contact Phone: 
Event Speaker: 
Adrian Dumitru (Baruch CUNY)