Autor:	Polkinghorne, Rodney E. S., Simula, Tapio P.
Rok vydání:	2021
Předmět:	Condensed Matter - Quantum Gases
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.104.L061301
Popis:	We consider rotating finite size vortex arrays in Bose-Einstein condensates that are confined by cylindrically symmetric external potentials. We show that such systems possess two exact Nambu-Goldstone zero modes associated with two spontaneously broken continuous symmetries of the system. We verify our analytical result via direct numerical diagonalizations of the Bogoliubov-de Gennes equations. We conclude by comparing rotating vortex lattices in superfluids to supersolids and discrete time crystals. Comment: 6 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2109.04648 Zobrazit plný text záznamu View this record from Arxiv