Conveners
Parallel session 19: New theoretical developments I
- Berndt Mueller (Duke University)
In heavy-ion collisions, the transverse momentum broadening coefficient, $\hat{q}$ plays an integral role in characterising how a high-energy parton loses energy to the quark-gluon plasma (QGP) through which it passes. Over the last few years, it has been shown [1,2] that $\hat{q}$ starts to receive radiative corrections at $\mathcal{O}(g^2)$, featuring potentially large logarithms. Indeed,...
The multistage approach based on hydrodynamics has achieved remarkably success in modeling heavy-ion physics, providing an accurate description of experimental particle spectra as well as various signatures of collective flow, flow correlations, and fluctuations. However, traditional numerical simulations of hydrodynamics are challenged by recent high-precision measurements: to probe the finer...
The unexpected pattern of global spin alignment of vector mesons observed in relativistic heavy-ion collisions for different particle species have posed a strong challenge to theoretical interpretation, as it cannot be explained solely through conventional polarization sources such as vorticity and electromagnetic fields. We argue that fluctuations of strong-force fields with short correlation...
We present the first set of fully-nonlinear, necessary and sufficient conditions guaranteeing causal evolution of the initial data for the Israel-Stewart equations with shear and bulk viscosity from kinetic theory coupled to a nonzero baryon current. These nonlinear constraints not only provide causality: they also (a) guarantee the existence of a locally well-posed evolution of the initial...
In the past years, different observables related to the spin polarization of hadrons such as $\Lambda$-Baryons have attracted much attention and continue to find new applications.
While some measurements (such as the global polarization) are straightforwardly reproduced by assuming the spins of the particles to be in equilibrium, the explanation of more differential observables (such as the...
