* FíSICA NUCLEAR * Seminario online

Hola a Todos,

les copio los detalles del seminario de los martes correspondiente a esta semana.

saludos

Rolo

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Dear Colleagues,

 

Please join us for our next Rising Researchers seminar on Tuesday (February 20th) at 10:30 AM Pacific Time by Abraham Flores --- Washington University in St. Louis.

 

The seminar is fully virtual. Please find the Zoom link below.

 

Title: Quantum Monte Carlo Calculations of Neutron Scattering from Alpha

 

Abstract: 

A paramount goal in nuclear physics is to unify ab initio treatments of bound and unbound states. The position-space quantum Monte Carlo (QMC) methods have a long history of successful bound-state calculations in light systems but have seen minimal implementation in unbound systems. Here, we introduce a numerical method to improve the efficiency and accuracy of unbound-state calculations in QMC, implement it numerically in the definitive computer codes for these methods, and test it out in nuclear systems small enough for quick turnaround but large enough to have interesting dynamics. The method involves inferring long-range amplitudes in the wave function from integrals over the small region where all the particles interact. Applying the integral method in Green's function Monte Carlo reproduces existing results in neutron-alpha scattering, clearing the way for its use in coupled-channels problems. This technique makes a path for GFMC-accurate calculations of coupled-channels scattering, including reactions, in nuclear mass ranges that may be permanently beyond the range of the other few-body methods.

 

Zoom link:

https://us06web.zoom.us/j/85077701870

 

Sincerely,

Rising Researchers Seminar Series Committee