Coupled quantum spin chains: how does the gap depend on the interchain interaction?

✍ Scribed by A.S.T. Pires; M.E. Gouve̊a

• Book ID: 104166255
• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 60 KB
• Volume: 127
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/s0038-1098(03)00481-2

✦ Synopsis

In this note we show that a naive use of the mean field approximation to treat the interchain interaction in a quasi-one dimensional ferromagnet may lead to a spurious gap.