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http://hdl.handle.net/1783.1/2241
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| Title: | Edge states in antiferromagnetic quantum spin chains |
| Authors: | Ng, Tai-Kai |
| Keywords: | Edge states
Antiferromagnetic quantum spin chains
Spin quantum
Spin chains |
| Issue Date: | Jul-1994 |
| Citation: | Physical review. B, v. 50, iss. 1, July 1994, p. 555-558 |
| Abstract: | The structure of edge states in general finite antiferromagnetic quantum spin chains with arbitrary spin value S is discussed in this letter within the framework of non-linear-sigma-model (NLσM) plus topological θ-term. Based on a large-N theory of SU(N) quantum antiferromagnets and strong coupling expansion, we argue that edge states with fractionalized spin quantum number S' exist in all spin chains with S≥1, with S'=S/2 for integer spin chains and S'=(S-1/2)/2 for half-integer spin chains. |
| Rights: | Physical Review, B © copyright (1994) American Physical Society. The Journal's web site is located at http://prb.aps.org |
| URI: | http://hdl.handle.net/1783.1/2241 |
| Appears in Collections: | PHYS Journal/Magazine Articles
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| 1_1edge.pdf | pre-published version | 1074Kb | Adobe PDF | View/Open |
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