Divergence-type theory of conformal fields

TL;DR

This paper introduces a nonlinear hydrodynamical framework for conformal plasmas using divergence-type theories, showing faster approach to ideal hydrodynamics than second-order theories, with implications for early-time heavy-ion collision dynamics.

Contribution

It develops a divergence-type theory for conformal fields that does not rely on gradient expansion, offering a new approach to modeling relativistic plasma dynamics.

Findings

DTT approach converges faster to ideal hydrodynamics than second-order theories.

The method is applicable to early-time dynamics in heavy-ion collisions.

Comparison with second-order theory highlights advantages of DTT in nonlinear regimes.

Abstract

We present a nonlinear hydrodynamical description of a conformal plasma within the framework of divergence-type theories (DTTs), which are not based on a gradient expansion. We compare the equations of the DTT and the second-order theory (based on conformal invariants), for the case of Bjorken ow. The approach to ideal hydrodynamics is faster in the DTT, indicating that our results can be useful in the study of early-time dynamics in relativistic heavy-ion collisions.