43,576 research outputs found
Gluon and Ghost Dynamics from Lattice QCD
The two point gluon and ghost correlation functions and the three gluon
vertex are investigated, in the Landau gauge, using lattice simulations. For
the two point functions, we discuss the approach to the continuum limit looking
at the dependence on the lattice spacing and volume. The analytical structure
of the propagators is also investigated by computing the corresponding spectral
functions using an implementation of the Tikhonov regularisation to solve the
integral equation. For the three point function we report results when the
momentum of one of the gluon lines is set to zero and discuss its implications.Comment: Proceedings of Light Cone 2016, held in Lisbon, September 2016. Minor
changes in text. To appear in Few B Sy
Panchromatic models of galaxies: GRASIL
We present here a model for simulating the panchromatic spectral energy
distribution of galaxies, which aims to be a complete tool to study the complex
multi-wavelength picture of the universe. The model take into account all
important components that concur to the SED of galaxies at wavelengths from
X-rays to the radio. We review the modeling of each component and provide
several applications, interpreting observations of galaxy of different types at
all the wavelengths.Comment: 10 pages, 4 figures, invited talk, to appear in the proceedings of:
"The Spectral Energy Distribution of Gas-Rich Galaxies: Confronting Models
with Data", Heidelberg, 4-8 Oct. 2004, eds. C.C. Popescu and R.J. Tuffs, AIP
Conf. Ser., in pres
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