Effective theory for deformed nuclei

TL;DR

This paper applies effective field theory to model deformed nuclei, leveraging symmetry breaking and scale separation to develop a Hamiltonian that captures rotational and vibrational modes.

Contribution

It introduces a novel effective field theory framework for nuclear rotation, incorporating symmetry breaking and scale separation to improve modeling accuracy.

Findings

Hamiltonian constructed at next-to-leading order

Power counting scheme established

Effective theory captures rotational and vibrational modes

Abstract

Techniques from effective field theory are applied to nuclear rotation. This approach exploits the spontaneous breaking of rotational symmetry and the separation of scale between low-energy Nambu-Goldstone rotational modes and high-energy vibrational and nucleonic degrees of freedom. A power counting is established and the Hamiltonian is constructed at next-to-leading order.