Fermionic versus bosonic descriptions of one-dimensional spin-gapped antiferromagnets

• Published in: Физика низких температур
• Date: 2005
• Main Authors: Yamamoto, Shoji, Funase, Kei-ichi
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2005
• Subjects: К семидесятилетию антиферромагнетизма
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/121692
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Fermionic versus bosonic descriptions of one-dimensional spin-gapped antiferromagnets / Shoji Yamamoto, Kei-ichi Funase // Физика низких температур. — 2005. — Т. 31, № 8-9. — С. 974-983. — Бібліогр.: 112 назв. — англ.

In terms of spinless fermions and spin waves, we describe magnetic properties of a spin-1/2 ferromagnetic– antiferromagnetic bond-alternating chain which behaves as a Haldane-gap antiferromagnet. On one hand, we employ the Jordan–Wigner transformation and treat the fermionic Hamiltonian within th...