Browsing Τμήμα Φυσικής / Department of Physics by Subject "QCD"
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Article
Lattice investigation of the scalar mesons a0(980) and κ using four-quark operators
(2013)We carry out an exploratory study of the isospin one a0(980) and the isospin one-half κ scalar mesons using Nf = 2 + 1 + 1 Wilson twisted mass fermions at one lattice spacing. The valence strange quark is included as an ...
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Article
N-to-Δ electromagnetic-transition form factors from lattice QCD
(2005)The magnetic dipole (M1), the electric quadrupole (E2), and the Coulomb quadrupole (C2) amplitudes for γN → Δ are calculated in quenched lattice QCD. Using a new method, which combines an optimal choice of interpolating ...
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Article
Topological susceptibility of SU(N) gauge theories at finite temperature
(2004)We investigate the large-N behavior of the topological susceptibility χ in four-dimensional SU(N) gauge theories at finite temperature, and in particular across the finite-temperature transition at Tc. For this purpose, ...
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Article
θ dependence of S U (N) gauge theories in the presence of a topological term
(2009)We review results concerning the θ dependence of 4D S U (N) gauge theories and QCD, where θ is the coefficient of the CP-violating topological term in the Lagrangian. In particular, we discuss θ dependence in the large-N ...