期刊
PHYSICAL REVIEW B
卷 97, 期 16, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.97.165114
关键词
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资金
- Emergent Phenomena in Quantum Systems initiative of the Gordon and Betty Moore Foundation
- NSF GRFP [DGE-1752814]
We introduce a systematic construction of a gapless symmetry-protected topological phase in one dimension by decorating the domain walls of Luttinger liquids. The resulting strongly interacting phases provide a concrete example of a gapless symmetry-protected topological (gSPT) phase with robust symmetry-protected edge modes. Using boundary conformal field theory arguments, we show that while the bulks of such gSPT phases are identical to conventional Luttinger liquids, their boundary critical behavior is controlled by a different, strongly coupled renormalization group fixed point. Our results are checked against extensive density matrix renormalization group calculations.
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