Causal Baryon Diffusion and Colored Noise

Understand

We construct a model of baryon diffusion which has the desired properties of causality and analyticity.

• The model also has the desired property of colored noise, meaning that the noise correlation function is not a Dirac delta function in space and time; rather, it depends on multiple time and length constants.
• The model can readily be incorporated in 3+1 dimensional second order viscous hydro-dynamical models of heavy ion collisions, which is particularly important at beam energies where the baryon density is large.