644 research outputs found
Topology on the Lattice
We review the method developed in Pisa to determine the topological
susceptibility in lattice QCD and present a collection of new and old results
obtained by the method.Comment: 10 pages, 7 figures. Contribution to "Sense of Beauty in Physics - a
volume in honour of Adriano Di Giacomo" (Pisa University Press, Pisa, 2006),
on the occasion of his 70th birthda
Topological susceptibility through the deconfining phase transition
We present a measurement of the topological susceptibility in SU(3)
Yang-Mills theory through the deconfinement phase transition. An improved
operator is used for the topological charge density. A drop by an order of
magnitude is observed from the confined to the deconfined phase.Comment: Talk presented at LATTICE96(topology). 3 pages, 2 postscript figures,
uses espcrc2.sty include
Topology, chiral and screening transitions at finite density in two colour QCD
The behaviour of the topological susceptibility in QCD with two colours and 8
flavours of quarks is studied at nonzero temperature on the lattice across the
finite density transition. It is shown that its signal drops at a
(pseudo-)critical chemical potential mu_c. The Polyakov loop and the chiral
condensate undergo their transitions at the same value. Pauli blocking
supervenes at a value of the chemical potential larger than mu_c.Comment: Latex file (uses espcrc2.sty), 4 pages, 4 ps figures; talk presented
at QCD-06, Montpellier, July 200
Interactions between Trichoderma spp and soil-borne plant pathogens : implications for biological control
Imperial Users onl
Topological properties of QCD with two dynamical fermions
We investigate the topological susceptibility of the QCD vacuum with two
flavours of dynamical staggered fermions on the lattice both at zero and finite
temperature. At zero temperature we study the dependence of the signal on the
fermion mass and at finite temperature we analyze the behaviour across the
phase transition.Comment: LATTICE99(finite temperature and density). 3 pages, contains
espcrc2.sty fil
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