arXivDaily arXiv每日学术速递 周一至周五更新
arXiv math-ph/0402067math-phhep-thmath.MP
收藏

开自旋链的边界非定域电荷

Boundary non-local charges from the open spin chain

Anastasia Doikou

摘要:

研究了具有右非对角边界和特殊对角左边界的$N$格点开XXZ量子自旋链.对于半直线上的正弦戈登模型,从自旋链的观点恢复了原来从场论观点得到的边界非局域电荷。此外,开放的自旋链的对称性表现出来。更具体地说,我们表明,某些非本地电荷交换与转移矩阵的开放自旋链,取决于边界条件的选择。此外,我们明确地表明,对于一个特殊的选择的左边界,一个非本地的费用,在一个特定的表示,与每一个生成的斑点代数,因此与相应的本地哈密顿交换。

英文摘要:

The $N$ site open XXZ quantum spin chain with a right non-diagonal boundary and special diagonal left boundary is considered. The boundary non-local charges originally obtained from a field theoretical viewpoint, for the sine Gordon model on the half line, are recovered from the spin chain point of view. Furthermore, the symmetry of the open spin chain is exhibited. More specifically, we show that certain non--local charges commute with the transfer matrix of the open spin chain, depending on the choice of boundary conditions. In addition, we show explicitly that for a special choice of the left boundary, one of the non--local charges, in a particular representation, commutes with each one of the generators of the blob algebra, and hence with the corresponding local Hamiltonian.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑