Aug 8 – 13, 2022
Hörsaalzentrum Poppelsdorf
Europe/Berlin timezone

The chiral phase transition at nonzero imaginary baryon chemical potential for different numbers of quark flavours

Aug 9, 2022, 3:00 PM
CP1-HSZ/Ground-0.011 - HS1 (CP1-HSZ)

CP1-HSZ/Ground-0.011 - HS1


Oral Presentation QCD at Non-zero Temperature Non-zero Temperature


Alfredo D'Ambrosio (Johann Wolfgang Goethe-Universität)


The so called Columbia Plot summarises the order of the QCD thermal transition as a function of the number of quark flavours and their masses. Recently, it was demonstrated that the first-order chiral transition region, as seen for $N_f=3-6$ on coarse lattices, exhibits tricritical scaling while extrapolating to zero on sufficiently fine lattices. Here we extend these studies to imaginary baryon chemical potentials, using $N_f=4,5$. A similar shrinking of the first-order region is observed with decreasing lattice spacing, which is so far entirely similar to the situation at zero density.

Primary authors

Alfredo D'Ambrosio (Johann Wolfgang Goethe-Universität) Prof. Owe Philipsen (Goethe-University Frankfurt) Reinhold Kaiser

Presentation materials