Nonclassical rotational inertia for a supersolid under rotation

Abstract

As proposed by Leggett [4], the supersolidity of a crystal is characterized by the Non Classical Rotational Inertia (NCRI) property. Using a model of quantum crystal introduced by Josserand, Pomeau and Rica [5], we prove that NCRI occurs. This is done by analyzing the ground state of the aforementioned model, which is related to a sphere packing problem, and then deriving a theoretical formula for the inertia momentum. We infer a lower estimate for the NCRI fraction, which is a landmark of supersolidity.

References in corpus (2)

• Supersolid Helium at High Pressure
• Coexisting ordinary elasticity and superfluidity in a model of defect-free supersolid

Cited by in corpus (4)

• Mean-field and stability analysis of two-dimensional flowing soft-core bosons modeling a supersolid
• Bose-Einstein Quantum Statistics and the Ground State of Solid 4He
• Induced interaction and crystallization of self-localized impurity fields in a Bose-Einstein condensate
• Global solutions for 3D nonlocal Gross-Pitaevskii equations with rough data