Dissipative effects on quarkonium spectral functions

Abstract

Quarkonium at finite temperature is described as an open quantum system whose dynamics are determined by a potential $V_R(\mathbf{x})$ and drag coefficient $\eta$, using a path integral with a non-local term. Path-integral Monte Carlo calculations determine the Euclidean Green function for this system to an accuracy greater than one part in a thousand and the maximum entropy method is used to determine the spectral function; challenges facing any kind of deconvolution are discussed in detail with the aim of developing intuition for when deconvolution is possible. Significant changes to the quarkonium spectral function in the $1S$ channel are found, suggesting that any description of quarkonium at finite temperature, using a potential, must also carefully consider the effect of dissipation.

arXiv comment13 pages, 7 figures, This is the version accepted for publication in Physical Review C

References in corpus (11)

• Quarkonium correlators and spectral functions at zero and finite temperature
• Heavy quark master equations in the Lindblad form at high temperatures
• Stochastic potential and quantum decoherence of heavy quarkonium in the quark-gluon plasma
• Thermal Noise and Stochastic Strings in AdS/CFT
• Thermal width and quarkonium dissociation by inelastic parton scattering
• MARTINI for heavy quarks: initialization, parton evolution, and hadronization with event generation
• Quarkonium above deconfinement as an open quantum system
• How to compute the thermal quarkonium spectral function from first principles?
• Charmonium in strongly coupled quark-gluon plasma
• A path integral for heavy-quarks in a hot plasma
• Some aspects of the quark-antiquark Wilson loop formalism in the NRQCD framework

Cited by in corpus (1)

• Sequential bottomonium production at high temperatures