Speaker
Description
Within the Generalized Contact Formalism [1], I will present a study of short-range correlations and contact coefficients [2], utilizing realistic chiral potentials, derived either in coordinate-space, and therefore local, or in momentum-space, and therefore non-local. Additionally, we employ the Hyperpherical Harmonics method [3] to calculate the two-body momentum distribution with virtually any potential[4]. Specifically, I will present results for A=2, 3, and 4 nuclei, in order to address the model-independent behavior of the contact coefficient ratio across various spin and isospin channels. We will verify whether the contact coefficient ratio between different nuclei exhibits minimal dependence on the nuclear interaction model, thus extending the results presented in Ref. [2], when these coefficients were obtained using only local interactions.
[1] R. Weiss, Cruz-Torres R. et al., “The nuclear contacts and short-range correlations in nuclei”, Phys. Lett. B 780, 211-215 (2018).
[2] Cruz-Torres R., Lonardoni, D., Weiss, R. et al., “Many-body factorization and position–momentum equivalence of nuclear short-range correlations”, Nat. Phys. 17, 306–310 (2021).
[3] L. E. Marcucci et al., “The Hyperspherical Harmonics Method: A Tool for Testing and Improving Nuclear Interaction Models”, Front. in Phys 8, 69 (2020).
[4] L. E. Marcucci et al., “Momentum distributions and short-range correlations in the deuteron and 3He with modern chiral potentials”, Phys. Rev. C 99, 034003 (2019).
