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arXiv · 2308.16587

Un-screened forces in Quark-Gluon Plasma?

Alexei Bazavov·Daniel Hoying·Rasmus N. Larsen·Swagato Mukherjee·Peter Petreczky·Alexander Rothkopf·Johannes Heinrich Weber
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Abstract

We study the correlator of temporal Wilson lines at non-zero temperature in 2+1 flavor lattice QCD with the aim to define the heavy quark-antiquark potential at non-zero temperature. For temperatures $153~{\rm MeV} \leq T \leq 352~{\rm MeV}$ the spectral representation of this correlator is consistent with a broadened peak in the spectral function, position or width of which then defines the real or imaginary parts of the heavy quark-antiquark potential at non-zero temperature, respectively. We find that the potential's real part is not screened contrary to the widely-held expectations. We comment on how this fact may modify the picture of quarkonium melting in the quark-gluon plasma.

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Alexei Bazavov, Daniel Hoying, Rasmus N. Larsen, Swagato Mukherjee, Peter Petreczky, Alexander Rothkopf, Johannes Heinrich Weber. 2023-08-31. Un-screened forces in Quark-Gluon Plasma?. https://doi.org/10.1103/physrevd.109.074504

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