一维两通道近藤晶格中的代数hastatic序
Algebraic Hastatic Order in One-Dimensional Two-Channel Kondo Lattice
AI总结:
本研究利用密度矩阵重整化群重新探究一维两通道近藤晶格的相图,发现强耦合下普遍存在代数hastatic序,还揭示了大N极限下不存在的非局域序参量及暗示高维非费米液体物理的残余排斥相互作用。
摘要:
两通道近藤晶格可能蕴含丰富的相态,包括hastatic序——一种破缺通道对称性的重费米液体。我们利用密度矩阵重整化群重新研究了其一维相图,与以往工作不同,我们发现在较强耦合下普遍存在代数hastatic序。这些是重的Tomonaga-Luttinger液体,在费米波矢处具有非解析性,可由hastatic密度波描述。我们还发现了一种预测的额外非局域序参量,它源于hastatic旋量之间的干涉,在大N极限下不存在;强耦合下的残余排斥相互作用表明更高维度中存在非费米液体物理。
英文摘要:
The two-channel Kondo lattice likely hosts a rich array of phases, including hastatic order, a channel symmetry breaking heavy Fermi liquid. We revisit its one-dimensional phase diagram using density matrix renormalization group and, in contrast to previous work find algebraic hastatic orders generically for stronger couplings. These are heavy Tomonaga-Luttinger liquids with nonanalyticities at Fermi vectors captured by hastatic density waves. We also find a predicted additional non-local order parameter due to interference between hastatic spinors, not present at large-N; and residual repulsive interactions at strong coupling suggesting non-Fermi-liquid physics in higher dimensions.
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