Publications (9)25.24 Total impact
 Journal of NonCrystalline Solids 01/1991; · 1.60 Impact Factor

Article: Distribution of occupied states in aC:H and aSiC: H alloys as determined by total yield spectroscopy
Journal of Noncrystalline Solids  J NONCRYST SOLIDS. 01/1991; 137:867870.  [show abstract] [hide abstract]
ABSTRACT: By using a source method and improved measuring techniques, we study the decay of the Polyakov loop in SU(3) lattice gauge theory at finite temperature. Our aim is to measure the correlation length of the system in the neighbourhood of the critical point. We work with lattices of size up to 162×64×4. We found that the maximum correlation length is only bounded by the spatial dimension of the lattice. This result is the one expected in a second order phase transition and appears to be incompatible with the presence of the strong first order transition claimed in the literature.Nuclear Physics B 05/1989; · 4.33 Impact Factor  [show abstract] [hide abstract]
ABSTRACT: We compute the QCD hadronic mass spectrum in quenched lattice QCD at β=5.7 with small statistical and systematic errors by using the APE computer.Nuclear Physics B 05/1989; 317(3):509525. · 4.33 Impact Factor  [show abstract] [hide abstract]
ABSTRACT: We measure the correlation length of Polyakov loop in the region of the deconfinement transition for a pure gauge SU(3) theory on lattices of different sizes. The correlation length is found to be of the order of lattice size, thus excluding a strong first order transition.Nuclear Physics B  Proceedings Supplements 01/1989; · 0.88 Impact Factor  [show abstract] [hide abstract]
ABSTRACT: We study the behavior of the string tension in the SU(3) lattice puregauge theory close to the deconfining critical point. We find very large correlation lengths, increasing with the lattice size. This result is strongly suggestive of a secondorder phase transition, and excludes the presence of a strong firstorder transition.Physical Review Letters 11/1988; 61(14):15451548. · 7.94 Impact Factor  [show abstract] [hide abstract]
ABSTRACT: We study the hadronic mass spectrum in quenched lattice QCD. We present the results of numerical simulations done at β = 5.7 and β = 6.0. B and A1 meson masses get much closer to the physical values at β = 6.0, and so do the baryonic splittings. The mass ratio in the chiral limit tends to be from 10 to 20% higher than the experimental value. We estimate the nucleon σ term from the proton mass slope.Physics Letters B 01/1988; · 4.57 Impact Factor  [show abstract] [hide abstract]
ABSTRACT: We study the hadronic mass spectrum in quenched lattice QCD. We present the results of numerical simulations done at beta = 5.7 and beta = 6.0. B and A1 meson masses get much closer to the physical values at beta = 6.0, and so do the baryonic splittings. The mass ratio mp/mp in the chiral limit tends to be from 10 to 20% higher than the experimental value. We estimate the nucleon sigma term from the proton mass slope.Physics Letters B  PHYS LETT B. 01/1988; 214:115119.  [show abstract] [hide abstract]
ABSTRACT: The density of occupied states at the valence band edge and in the pseudogap is investigated by using Total yield spectroscopy. It is found that close to the valence band edge the yield spectra follow a (hv  Ev)3/(hv)2 dependence. A large increase of gap state density with increasing carbon content is also found.Journal of NonCrystalline Solids s 137–138:867–870. · 1.60 Impact Factor
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25.24  Total Impact Points  