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

We report on the first lattice calculation of the QCD phase transition usingchiral fermions at physical values of the quark masses. This calculation uses2+1 quark flavors, spatial volumes between (4 fm$)^3$ and (11 fm$)^3$ andtemperatures between 139 and 196 MeV . Each temperature was calculated using asingle lattice spacing corresponding to a temporal Euclidean extent of $N_t=8$.The disconnected chiral susceptibility, $\chi_{\rm disc}$ shows a pronouncedpeak whose position and height depend sensitively on the quark mass. We find nometastability in the region of the peak and a peak height which does not changewhen a 5 fm spatial extent is increased to 10 fm. Each result is strongevidence that the QCD ``phase transition'' is not first order but a continuouscross-over for $m_\pi=135$ MeV. The peak location determines a pseudo-criticaltemperature $T_c = 155(1)(8)$ MeV. Chiral $SU(2)_L\times SU(2)_R$ symmetry isfully restored above 164 MeV, but anomalous $U(1)_A$ symmetry breaking isnon-zero above $T_c$ and vanishes as $T$ is increased to 196 MeV.

The QCD phase transition with physical-mass, chiral quarks