Bethe-Salpeter amplitudes of Upsilons

@article{Larsen2020BetheSalpeterAO,
  title={Bethe-Salpeter amplitudes of Upsilons},
  author={Rasmus Normann Larsen and Stefan Meinel and Swagato Mukherjee and P{\'e}ter Petreczky},
  journal={arXiv: High Energy Physics - Lattice},
  year={2020}
}
Based on lattice non-relativistic QCD (NRQCD) studies we present results for Bethe-Salpeter amplitudes for $\Upsilon(1S)$, $\Upsilon(2S)$ and $\Upsilon(3S)$ in vacuum as well as in quark-gluon plasma. Our study is based on 2+1 flavor $48^3 \times 12$ lattices generated using the Highly Improved Staggered Quark (HISQ) action and with a pion mass of $161$ MeV. At zero temperature the Bethe-Salpeter amplitudes follow the expectations based on non-relativistic potential models. At non-zero… 
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