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Supersolid Phases of Bosonic Particles in a Bubble Trap by Ciardi, Matteo; Cinti, Fabio; Pellicane, Giuseppe; Prestipino, Santi is a scholarly article available to read on EtoBox.

What is Supersolid Phases of Bosonic Particles in a Bubble Trap about?

Confinement can have a considerable effect on the behavior of particle systems, and is therefore an effective way to discover new phenomena. A notable example is a system of identical bosons at low temperature under an external field mimicking an isotropic bubble trap, which constrains the particles to a portion of space close to a spherical surface. Using Path Integral Monte Carlo simulations, we examine the spatial structure and superfluid fraction in two emblematic cases. First, we look at soft-core bosons, finding the existence of supersolid cluster arrangements with polyhedral symmetry; we show how different numbers of clusters are stabilized depending on the trap radius and the particle mass, and we characterize the temperature behavior of the cluster phases. A detailed comparison with the behavior of classical soft-core particles is provided too. Then, we examine the case, of more immediate experimental interest, of a dipolar condensate on the sphere, demonstrating how a quasi-one-dimensional supersolid of clusters is formed on a great circle for realistic values of density and interaction parameters. Crucially, this supersolid phase is only slightly disturbed by gravity. We

Author

Ciardi, Matteo; Cinti, Fabio; Pellicane, Giuseppe; Prestipino, Santi

Published

2023

Language

EN