»ein gelobtes Land«

SU(N) gauge theories at large N

“…[774] and discussed in refs. [775,776,777,778,779,780,781], and stems from the observation that the large-N equivalence of theories based on orthogonal and unitary gauge groups may allow one to get information about the latter in the finite baryon density regime (in which lattice simulations are hindered by a severe computational sign problem [782,783,784]), by performing numerical simulations of the former, for which the sign problem is absent. In addition, these equivalences also allow one to analytically derive interesting implications for the critical point in the QCD phase diagram, and for the order of the chiral symmetry restoration transition for massless quarks-which is of first (second) order when it occurs at a critical temperature equal to (larger than) that of the deconfinement transition [785].…”

“…Further details about the lattice investigation of the QCD equation of state can be found in refs. [784,924].…”

Thermal QCD transition with two flavors of twisted mass fermions

“…It can be investigated non-perturbatively using lattice QCD as long as the chemical potential for fermion number is small, µ/T < 1. A lot of effort has been invested in lattice studies at zero chemical potential, for recent reviews see [1][2][3][4]. Impressive progress has been reported very recently by several collaborations working with different fermion discretization schemes [5][6][7][8][9][10].…”

Landau gauge gluon and ghost propagators from lattice QCD withNf=2twisted mass fermions at finite temperature

“…This remains true as long as the chemical potential is small compared to the temperature. Over the last decade immense computational resources were dedicated to reach at a consistent picture of QCD at finite temperature and zero chemical potential (for recent reviews see [6][7][8][9]).…”