### Speaker

Ms
Francesca Cuteri
(Goethe University - Frankfurt)

### Description

The attempt at clarifying the order of the thermal transition in the chiral limit of QCD at zero chemical potential, with two dynamical flavours of quarks, by progressively decreasing the simulated pion mass has proven to be inconclusive because of the increasing costs of the simulations as the pion mass is lowered.
An alternative way to approach this question is to consider the path integral as a function of continuous

*N*. If the transition is first order for_{f}*N*, a second order transition for_{f}≳ 3*N*requires a tricritical point in between. The simulation of non-integer numbers of fermion flavours is easily achievable within the staggered fermion discretization. First simulations at_{f}= 2*μ = 0*and*N*, on coarse_{f}= 2.8, 2.6, 2.4, 2.2*N*lattices, show a continuous variation of the critical mass mapping out a critical line in the_{τ}= 4*m − N*plane._{f}### Primary author

Ms
Francesca Cuteri
(Goethe University - Frankfurt)

### Co-authors

Mr
Alessandro Sciarra
(Goethe Universität)
Prof.
Owe Philipsen
(Goethe University - Frankfurt)