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Insights into the nature of the
Meng-Lin Du, Zhi-Hui Guo, J. A. Oller
We study the nature of the recently observed by the LHCb collaboration by employing three methods based on the elastic effective-range expansion and the resulting si…
Ultracold spin-balanced fermionic quantum liquids with renormalized -wave interactions
J. M. Alarcón, J. A. Oller
We consider a spin-balanced degenerate gas of spin-1/2 fermions whose dynamics is governed by low-energy -wave interactions, characterized by the scattering volume and eff…
Ladder resummation of spin 1/2 fermion many-body systems with arbitrary partial-wave content
J. M. Alarcón, J. A. Oller
We resum the ladder diagrams for the calculation of the energy density of a spin 1/2 fermion many-body system in terms of arbitrary vacuum two-body scattering amplitudes.…
Non-perturbative methods for NN singular interactions
D. R. Entem, J. A. Oller
Chiral Effective Field Theory (EFT) has been extensively used to study the interaction during the last three decades. In Effective Field Theories (EFTs) the renormalization…
Revisiting the nature of the pentaquarks
Meng-Lin Du, Vadim Baru, Feng-Kun Guo +4
The nature of the three narrow states, i.e., , and , is under intense discussion since their discovery from the updated analysis by LHCb. In…