Instability of Rotationally Tuned Dipolar Bose-Einstein Condensates

Autor:	Prasad, S. B., Bland, T., Mulkerin, B. C., Parker, N. G., Martin, A. M.
Rok vydání:	2018
Předmět:	Quantum Physics Condensed Matter - Quantum Gases
Zdroj:	Phys. Rev. Lett. 122, 050401 (2019)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.122.050401
Popis:	The possibility of effectively inverting the sign of the dipole-dipole interaction, by fast rotation of the dipole polarization, is examined within a harmonically trapped dipolar Bose-Einstein condensate. Our analysis is based on the stationary states in the Thomas-Fermi limit, in the corotating frame, as well as direct numerical simulations in the Thomas-Fermi regime, explicitly accounting for the rotating polarization. The condensate is found to be inherently unstable due to the dynamical instability of collective modes. This ultimately prevents the realization of robust and long-lived rotationally tuned states. Our findings have major implications for experimentally accessing this regime. Comment: 9 pages with 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1810.09041 Zobrazit plný text záznamu View this record from Arxiv