Speaker
Description
We present preliminary results from a lattice QCD study of the lowest energy levels of light nuclei—specifically the deuteron, dineutron, helium-3, and helium-4 systems—and compare those with their respective thresholds for investigating their binding energies. We utilize a set of $N_f=2+1$ flavor gauge ensembles, generated by the HotQCD Collaboration with the HISQ action at the physical sea quark masses and at lattice spacing $a = 0.076$ fm, while the valence sector employs clover fermions.
Calculations are performed at three valence pion masses $m_{\pi}\approx140$ MeV, $300$ MeV and $700$ MeV, employing both asymmetric and symmetric source-sink setup using a large statistics, with a goal to
explore the quark-mass dependence of nuclear bindings. The resulting correlation functions are analyzed using the standard vanila fitting, ratio correlators, as well as by employing the recently proposed transfer-matrix generalized eigenvalue problem (TGEVP) formalism.
| Parallel Session (for talks only) | Hadronic and nuclear spectrum and interactions |
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