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- Irbäck, A., et al.
(author)
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Lattice QCD with small number of flavours
- 1989
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In: Physics Letters B. - : Elsevier BV. - 0370-2693. ; 216:1-2, s. 177-183
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Journal article (peer-reviewed)abstract
- The finite temperature behaviour of lattice QCD with dynamical quarks for small number of flavours Nf is investigated. Simulations have been performed on lattices of size N3σ·4 with Nσ=8 and 12 and staggered fermions of mass ma=0.1 using a hybrid algorithm. We find that the two state signal at the critical point of the pure gauge theory, which is taken as sign for a fiorst order phase transition, persists for the values of Nf we have investigated, namely Nf=0.5, 1 and 2. It is, however, considerably weaker for Nf=1 and 2. Moreover, for Nf=2 the discontinuity at βc decreases with increasing lattice size. Thid puts doubt o order nature of the Nf=2 transition at intermediate masses.
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