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6 papers

nucl-th2026

Four-neutron halo model at the unitary limit

R. M Francisco, D. S. Rosa, G. Hupin +2

In some neutron-rich nuclei usually treated as two-neutron halos, the core can itself be resolved into a subcore-neutron-neutron subsystem, so that four valence neutrons may be inv…

cond-mat.quant-gas2026

Momentum Distribution and Contact Parameters of a mass-imbalanced three-body system across the Efimov-Unatomic transition

D. S. Rosa, R. M. Francisco, T. Frederico +2

The paper analyzes how the single‑particle momentum distribution and contact parameters behave in mass‑imbalanced three‑body systems at the critical dimension where discrete Efimov…

nucl-th2026

Geometric structure of two-neutron halo nuclei from Efimov physics at the unitary limit

R. M. Francisco, D. S. Rosa, T. Frederico +1

We investigate the geometric structure of two-neutron halo nuclei from the perspective of Efimov physics. Using the analytic three-body wave function obtained from the Faddeev equa…

cond-mat.mes-hall2026

Gaussian Expansion Method for few-body states in two-dimensional materials

Luiz G. M. Tenório, André J. Chaves, Emiko Hiyama +1

We investigate the properties of trions in transition metal dichalcogenides (TMDCs) monolayers using the Gaussian Expansion Method (GEM) adapted to two-dimensional systems. Exciton…

nucl-ex2025

The glue that binds us all -- Latin America and the Electron-Ion Collider

A. C. Aguilar, A. Bashir, J. J. Cobos-Martínez +23

The Electron-Ion Collider, a next generation electron-hadron and electron-nuclei scattering facility, will be built at Brookhaven National Laboratory. The wealth of new data will s…

cond-mat.quant-gas2025

Confinement-induced unatomic trimer states in mass-imbalanced systems

Rafael M. Francisco, D. S. Rosa, T. Frederico +2

As resonantly interacting trimers of the type AAB are progressively squeezed from to , unatomic states emerge. We calculated the contacts from the high momentum tail of…