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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The QCD phase diagram at imaginary chemical potential exhibits a richstructure and studying it can constrain the phase diagram at real values of thechemical potential. Moreover, at imaginary chemical potential standardnumerical techniques based on importance sampling can be applied, since no signproblem is present. In the last decade, a first understanding of the QCD phasediagram at purely imaginary chemical potential has been developed, but most ofit is so far based on investigations on coarse lattices ($N_\tau=4$,$a=0.3\:$fm). Considering the $N_f=2$ case, at the Roberge-Weiss critical valueof the imaginary chemical potential, the chiral/deconfinement transition isfirst order for light/heavy quark masses and second order for intermediatevalues of the mass: there are then two tricritical masses, whose positionstrongly depends on the lattice spacing and on the discretization. On$N_\tau=4$, we have the chiral $m_\pi^{\text{tric.}}=400\:$MeV with unimprovedstaggered fermions and $m_\pi^{\text{tric.}}\gtrsim900\:$MeV with unimprovedpure Wilson fermions. Employing finite size scaling we investigate the changeof this tricritical point between $N_\tau=4$ and $N_\tau=6$ as well as betweenWilson and staggered discretizations.

Roberge-Weiss transition in $N_f=2$ QCD with staggered fermions and $N_\tau=6$