UNISA-Brazil Symposium

Session

Session 2

27 Oct 2026, 10:50

Conveners

Session 2

• Amos Soweto Kubeka (University of South Africa)

40. [PLENARY TOPIC] Projectile-halo structural correction in the optical model description of weakly-bound nuclei

Lauro Tomio (Instituto de Física Teórica, Universidade Estadual Paulista (UNESP), São Paulo, Brazil)

27/10/2026, 10:50

Oral Presentation

It will be shown that an explicit treatment of the projectile halo structure within the optical model (OM) provides a more realistic and accurate description of elastic scattering involving weakly bound nuclei. Our approach underlines that, for a reliable description of elastic-scattering observables and reaction dynamics, one should consider the structural properties of halo projectiles in OM...

1. Incorporating halo structure into the optical model formalism

Bahati Mukeru

27/10/2026, 11:30

The structure of weakly-bound halo projectile nucleus is taken into account within the standard optical model. This achieved by constructing the nucleus-nucleus potential by means of the double-folding formalism where the projectile density is obtained from its ground-state wave function. This wave function contains the static structure of the ground-state. The obtained nucleus-nucleus...

38. Inverse Problems in Finance: Recovering the Local Volatility surface using Neural Networks

Hermann Azemtsa Donfack (University of Johannesburg)

27/10/2026, 11:50

Oral Presentation

Many problems in Physics involve recovering unknown parameters or potentials from observed data. Quantitative Finance faces a similar challenge: given a set of observed option prices, we need to recover the local volatility function that drives the dynamics of the underlying asset. In this study, we explore the calibration of the local volatility surface by inverting the Dupire forward...