8 papers
Singular points for cone actions on the product of certain homogeneous spaces
Lifan Guan, Chengyang Wu
In this paper, we investigate divergent orbits for cone actions on products of certain homogeneous spaces. We introduce a notion of essential singularity for such actions, and esti…
Universal scaling of many-body effects in quantum tunneling
Hongmian Shui, Chi-Kin Lai, Chengyang Wu +6
Quantum tunneling is fundamental to diverse phenomena and underpins a wide range of modern technologies. In the study of superconducting quantum computation and high-temperature su…
Vestigial Order Melting of a Chiral Atomic Superfluid in a Double-Valley Optical Lattice
Zhongcheng Yu, Chengyang Wu, Chi Zhang +2
The interplay of multiple symmetry-breaking channels plays an important role in shaping complex phase diagrams in many-body systems. In multicomponent superfluids, this interplay c…
The wave nature of a Mott insulator
Xudong Yu, Chengyang Wu, Wenhan Chen +10
Quantum phases of matter are routinely identified by coherence features, with interference patterns being one of the most directly observable quantities. In lattices, the superflui…
Simultaneously bounded and dense orbits for commuting Cartan actions
Dmitry Kleinbock, Chengyang Wu
In this paper we prove that the set of points that have bounded orbits under one regular diagonal flow and dense orbits under the other diagonal flow commuting with the first one h…
Probing universal phase diagram of dimensional crossover with an atomic quantum simulator
Jinyuan Tian, Zhongcheng Yu, Jing Liu +7
Dimensionality is a fundamental concept in physics, which plays a hidden but crucial role in various domains, including condensed matter physics, relativity and string theory, stat…