Nuclear Theory·nucl-th

Thursday·September 6, 2018

9 papers—6 primary·3 cross-listed

07
Transverse momentum broadening and collinear radiation at NLO in the $N = 4$ SYM plasma
Jacopo Ghiglieri🇨🇭 · HyungJoo Kim🇨🇭
We compute O(g) NLO corrections to the transverse scattering kernel and transverse momentum broadening coefficient $q^$ of weakly-coupled $N = 4$ SYM. Based on this, we also compute NLO correction to the collinear splitting rates. For $q^$ we find that the NLO/LO ratio is similar to the QCD one, with large NLO corrections. This is contrasted by our findings for the collinear splitting rate, which show a much better convergence in SYM than in QCD, providing further support to earlier expectations that NLO corrections have signs and relative magnitudes controlled by the specifics of the theory. We also compare the ratio of $q^$ in QCD and in $N = 4$ theory to strong coupling expectations.
↳ hep-phhep-thnucl-thJHEP(2018)·22 citations
08
Chiral anomaly in Weyl systems: no violation of classical conservation laws
Klaus Morawetz🇩🇪
The anomalous term $\sim EB$ in the balance of the chiral density can be rewritten as quantum current in the classical balance of density. Therefore it does not violate classical conservation laws as it is claimed to be caused by quantum fluctuations.
↳ cond-mat.str-elcond-mat.mes-hallnucl-thPLA(2019)·3 citations
09
Strangeness neutrality and baryon-strangeness correlations
Wei-jie Fu🇨🇳 · Jan M. Pawlowski🇩🇪 · Fabian Rennecke🇺🇸
We derive a simple relation between strangeness neutrality and baryon-strangeness correlations. In heavy-ion collisions, the former is a consequence of quark number conservation of the strong interactions while the latter are sensitive probes of the character of QCD matter. This relation allows us to directly extract baryon-strangeness correlations from the strangeness chemical potential at strangeness neutrality. The explicit calculations are performed within a low energy theory of QCD with 2+1 dynamical quark flavors at finite temperature and density. Non-perturbative quark and hadron fluctuations are taken into account within the functional renormalization group. The results show the pronounced sensitivity of baryon-strangeness correlations on the QCD phase transition and the crucial role that strangeness neutrality plays for this observable.
↳ hep-phnucl-thPRD(2019)·39 citations

Affiliations

first authorsco-authorsvia INSPIRE

Transverse momentum broadening and collinear radiation at NLO in the N=4 SYM plasma

Chiral anomaly in Weyl systems: no violation of classical conservation laws

Strangeness neutrality and baryon-strangeness correlations

Affiliations

Transverse momentum broadening and collinear radiation at NLO in the $N = 4$ SYM plasma