English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The nature of the thermal phase transition of two flavor QCD in the chirallimit has an important implication for the QCD phase diagram. We carry outlattice QCD simulations in an attempt to address this problem. Simulations areconducted with a Symanzik-improved gauge action and the HISQ fermion action.Within the imaginary chemical potential formulation, five different quarkmasses, $am=0.020,\, 0.018, \, 0.015, \, 0.013,\, 0.010$, and four differentlattice volumes $N_s=8, \, 12,\, 16, \, 20$ with temporal extent $N_t=4$ areused to explore the scaling behavior. At each of the quark masses, the Bindercumulants of the chiral condensate on different lattice volumes approximatelyintersect at one point. We find that at the intersection point, the Bindercumulant $B_4(am,a\mu_c) $ is around $3$ which deviates from the $Z(2)$universality class value 1.604. However, based on the expectations of $Z(2)$criticality, the fitting result only with the data from the largest latticevolume $N_s=20$ agrees well with earlier result [ Phys. Rev., D90, 074030(2014)]\cite{Bonati:2014kpa}. This fact implies that, although the finite cut-offeffects could be reduced with HISQ fermions even on $N_t=4$ lattices, largerlattices with spatial extent $N_s>=20$ for such studies are needed to controlfinite volume effects.

Nature of the chiral phase transition of two flavour QCD from imaginary chemical potential with HISQ fermions