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7 papers · 2 filters
Chiral symmetry breaking and the Banks--Casher relation in lattice QCD with Wilson quarks
Leonardo Giusti, Martin Lüscher
The Banks--Casher relation links the spontaneous breaking of chiral symmetry in QCD to the presence of a non-zero density of quark modes at the low end of the spectrum of the Dirac…
The chiral critical point of Nf=3 QCD at finite density to the order (mu/T)^4
Philippe de Forcrand, Owe Philipsen
QCD with three degenerate quark flavours at zero baryon density exhibits a first order thermal phase transition for small quark masses, which changes to a smooth crossover for some…
On cutoff effects in lattice QCD from short to long distances
Michele Della Morte, Rainer Sommer, Shinji Takeda
We discuss kinematical enhancements of cutoff effects at short and intermediate distances. Starting from a pedagogical example with periodic boundary conditions, we switch to the c…
Towards a controlled study of the QCD critical point
Ph. de Forcrand
The phase diagram of QCD, as a function of temperature T and quark chemical potential mu, may contain a critical point (mu_E,T_E) whose non-perturbative nature makes it a natural o…
Symmetries and exponential error reduction in Yang-Mills theories on the lattice
Michele Della Morte, Leonardo Giusti
The partition function of a quantum field theory with an exact symmetry can be decomposed into a sum of functional integrals each giving the contribution from states with definite…
Scaling test of two-flavor O(a)-improved lattice QCD
Michele Della Morte, Patrick Fritzsch, Harvey B. Meyer +5
We report on a scaling test of several mesonic observables in the non-perturbatively O(a) improved Wilson theory with two flavors of dynamical quarks. The observables are construct…