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Spectral functions of charmonium from 2 flavour anisotropic lattice data

The spectral functions of QCD can give us insight into properties of hadrons, and they are useful in probing the QCD vacuum. I will discuss the correlators and spectral functions of charmonium in high temperature two flavour QCD. The spectral functions have been obtained using the Maximum Entropy Me...

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Published in:arXiv.org 2013-12
Main Authors: Kelly, Aoife, Jon-Ivar Skullerud, Allton, Chris, Mehta, Dhagash, Oktay, Mehmet B
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Jon-Ivar Skullerud
Allton, Chris
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Oktay, Mehmet B
description The spectral functions of QCD can give us insight into properties of hadrons, and they are useful in probing the QCD vacuum. I will discuss the correlators and spectral functions of charmonium in high temperature two flavour QCD. The spectral functions have been obtained using the Maximum Entropy Method from anisotropic lattice data using the conserved vector current. This work has been done as part of the FASTSUM collaboration. We find that the spectral functions for zero momentum are stable. At non-zero momentum the spectral functions are less stable but still produce resonance and transport peaks. This work is part of our programme to calculate the heavy quark diffusion constant.
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subjects Anisotropy
Correlators
Hadrons
High temperature
Maximum entropy method
Momentum
Quantum chromodynamics
Spectra
Vector currents
title Spectral functions of charmonium from 2 flavour anisotropic lattice data
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