Universality of Many-Body States in Rotating Bose and Fermi Systems

Autor:	Borgh, M., Koskinen, M., Christensson, J., Manninen, M., Reimann, S. M.
Rok vydání:	2008
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Other Condensed Matter
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.77.033615
Popis:	We propose a universal transformation from a many-boson state to a corresponding many-fermion state in the lowest Landau level approximation of rotating many-body systems, inspired by the Laughlin wave function and by the Jain composite-fermion construction. We employ the exact-diagonalization technique for finding the many-body states. The overlap between the transformed boson ground state and the true fermion ground state is calculated in order to measure the quality of the transformation. For very small and high angular momenta, the overlap is typically above 90%. For intermediate angular momenta, mixing between states complicates the picture and leads to small ground-state overlaps at some angular momenta. Comment: 9 pages, 9 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0801.0966 Zobrazit plný text záznamu View this record from Arxiv