arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2306.03431cond-mat.stat-mechmath-phmath.MPnlin.SI
收藏

Heisenberg链局部守恒量的矩阵积算符表示

Matrix product operator representations for the local conserved quantities of the Heisenberg chain

Kyoichi Yamada, Kohei Fukai

摘要:

给出了Heisenberg链局部守恒量的矩阵乘积算符(MPO)表示的显式表达式。MPO的键尺寸与电荷的局域性成线性增长。MPO具有比局部电荷本身更简单的形式,并且它们的Catalan树模式自然地从矩阵乘积中出现。将定域守恒量的MPO表示推广到可积$\mathrm{SU}(N)$不变自旋链.

英文摘要:

We present the explicit expressions for the matrix product operator (MPO) representation for the local conserved quantities of the Heisenberg chain. The bond dimension of the MPO grows linearly with the locality of the charges. The MPO has more simple form than the local charges themselves, and their Catalan tree patterns naturally emerge from the matrix products. The MPO representation of local conserved quantities is generalized to the integrable $\mathrm{SU}(N)$ invariant spin chain.

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。

↑