Lattice {QCD} With Small Numbers of Flavors
Apr, 19887 pages
Published in:
- Phys.Lett.B 216 (1989) 177-183
- Published: 1989
Report number:
- LU-TP-88-03,
- BI-TP-88/09,
- CERN-TH-5130/88
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Abstract: (Elsevier)
The finite temperature behaviour of lattice QCD with dynamical quarks for small number of flavours N f is investigated. Simulations have been performed on lattices of size N 3 σ ·4 with N σ =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 N f we have investigated, namely N f =0.5, 1 and 2. It is, however, considerably weaker for N f =1 and 2. Moreover, for N f =2 the discontinuity at β c decreases with increasing lattice size. Thid puts doubt o order nature of the N f =2 transition at intermediate masses.- GAUGE FIELD THEORY: SU(3)
- FERMION: FLAVOR
- LATTICE FIELD THEORY: CRITICAL PHENOMENA
- FIELD THEORY: FINITE TEMPERATURE
- NUMERICAL CALCULATIONS: MONTE CARLO
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