Construction of continuous collective energy landscapes for large amplitude nuclear many-body problems

2024/05/28 by Paul Carpentier, Carpentier, Paul, N. Pillet +7 · 2 citations
Physics and Astronomy · #Nuclear physics research studies #Advanced Chemical Physics Studies #Nuclear Physics and Applications

paper · pdf · doi:10.48550/arxiv.2405.18312

Abstract

Several protocols are proposed to build continuous energy surfaces of many-body quantum systems, regarding both energy and states. The standard variational principle is augmented with constraints on state overlap, ensuring arbitrary precision on continuity. As an illustration, the lowest energy and excited state paths relevant for the ²⁴⁰Pu asymmetric fission are studied. The scission is clearly signed, with a neutron excess in the neck, the ultimate glue before its rupture. Our approach can potentially connect any couple of Hilbert space states, which opens up new horizons for various applications.

Cited by

• Shell effects in quasifission toward ¹⁸⁰ Hg: insights into fission asymmetric modes
• Microscopic theory of angular momentum distributions across the full range of fission fragments

Related

• Fermionic equations of motion in strongly-correlated media: applications to the nuclear many-body problem
• Self-consistent theory of large amplitude collective motion: Applications to approximate quantization of non-separable systems and to nuclear physics
• Nuclear Quantum Many-Body Dynamics: From Collective Vibrations to Heavy-Ion Collisions (2nd edition)
• Solution of large scale nuclear structure problems by wave function factorization
• Excited States from ADAPT-VQE convergence path in Many-Body Problems: application to nuclear pairing problem and H₄ molecule dissociation