发表机构
The Abdus Salam International Centre for Theoretical Physics; University College Dublin; Rinn Quantum（阿卜杜勒·萨拉姆国际理论物理中心; 都柏林大学学院; Rinn Quantum）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过电路模拟器探索耦合量子临界态，发现其可形成具有可调输运和磁化率指数的非费米液体相，而强耦合则导致屏蔽费米液体。
AI 中文摘要
混合金属-半导体量子电路为实现和探测强关联量子物质提供了一个受控的环境。这类模拟器可能解决的一个重大开放问题是，耦合的临界态能否结合成新的非费米液体（NFL）相。受近期实现的两位点电荷-近藤电路[W. Pouse等人，Nat. Phys. 19, 492 (2023)]的启发，我们揭示了每个位点从双通道近藤临界点涌现的耦合近藤任意子的命运。玻色化和量子布朗运动方法给出了完整的准弹道相图和低温输运性质，而数值重整化群计算则解决了互补的弱耦合极限。这些方法共同提供了统一的描述，并揭示了具有连续可调输运和磁化率指数的稳健非费米液体相。更强的位点间耦合最终产生一个被屏蔽的费米液体。
英文摘要
Hybrid metal-semiconductor quantum circuits offer a controlled setting for realizing and probing strongly correlated quantum matter. A largely open question that may be addressed by such simulators is whether coupled critical states can combine into new non-Fermi liquid (NFL) phases. Inspired by the recent realization of a two-site charge-Kondo circuit [W. Pouse \textit{et al.}, \href{https://www.nature.com/articles/s41567-022-01905-4}{Nat. Phys. \textbf{19}, 492 (2023)}], we uncover the fate of coupled Kondo anyons emerging from the two-channel-Kondo critical point at each site. Bosonization and quantum Brownian motion methods yield the full quasiballistic phase diagram and low-temperature transport properties, while numerical renormalization group calculations resolve the complementary weak-coupling limit. Together, these provide a unified description, and reveal robust NFL phases with continuously tunable transport and susceptibility exponents. Stronger inter-site coupling ultimately produces a screened Fermi liquid.
Comments8 pages, 3 figures
