Thermodynamic limit and surface energy of the XXZ spin chain with arbitrary boundary fields

doi:10.1016/j.nuclphysb.2014.04.010

	Thermodynamic limit and surface energy of the XXZ spin chain with arbitrary boundary fields
	Li, Yuan-Yuan 1; Cao, Junpeng 1,2; Yang, Wen-Li 3,4; Shi, Kangjie 3; Wang, Yupeng 1,2
刊名	NUCLEAR PHYSICS B
	2014-07-01
卷号	884 页码:17-27
ISSN号	0550-3213
DOI	10.1016/j.nuclphysb.2014.04.010
文献子类	Article
英文摘要	In two previous papers [26,27] the exact solutions of the spin-1/2 chains with arbitrary boundary fields were constructed via the off-diagonal Bethe ansatz (ODBA). Here we introduce a method to approach the thermodynamic limit of those models. The key point is that at a sequence of degenerate points of the crossing parameter eta = eta(m), the off-diagonal Bethe ansatz equations (BAEs) can be reduced to the conventional ones. This allows us to extrapolate the formulae derived from the reduced BAEs to arbitrary eta case with O(N-2) corrections in the thermodynamic limit N -> infinity. As an example the surface energy of the XXZ spin chain model with arbitrary boundary magnetic fields is derived exactly. This approach can be generalized to all the ODBA solvable models. (C) 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/). Funded by SCOAP(3).
WOS关键词	BETHE-ANSATZ SOLUTION ; INTERACTING BOSE-GAS ; HEISENBERG CHAIN ; ASHKIN-TELLER ; ONE-DIMENSION ; GROUND-STATE ; MODEL ; TERMS ; SYSTEMS ; POTTS
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000337989000002
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/49507]
专题	中国科学院近代物理研究所
通讯作者	Wang, Yupeng
作者单位	1.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China 2.Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China 3.NW Univ Xian, Inst Modern Phys, Xian 710069, Peoples R China 4.Beijing Ctr Math & Informat Interdisciplinary Sci, Beijing 100048, Peoples R China
推荐引用方式 GB/T 7714	Li, Yuan-Yuan,Cao, Junpeng,Yang, Wen-Li,et al. Thermodynamic limit and surface energy of the XXZ spin chain with arbitrary boundary fields[J]. NUCLEAR PHYSICS B,2014,884:17-27.
APA	Li, Yuan-Yuan,Cao, Junpeng,Yang, Wen-Li,Shi, Kangjie,&Wang, Yupeng.(2014).Thermodynamic limit and surface energy of the XXZ spin chain with arbitrary boundary fields.NUCLEAR PHYSICS B,884,17-27.
MLA	Li, Yuan-Yuan,et al."Thermodynamic limit and surface energy of the XXZ spin chain with arbitrary boundary fields".NUCLEAR PHYSICS B 884(2014):17-27.