期刊
PHYSICAL REVIEW LETTERS
卷 125, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.118001
关键词
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资金
- Complex Dynamics and Systems Program of the Army Research Office [W911NF-19-1-0268]
- Chicago Materials Research Science and Engineering Center - NSF [DMR-1420709]
- National Science Foundation Graduate Research Fellowship [1746045]
- NSF EFRI NewLAW Grant [1741685]
- NSF DMR Grant [1905974]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1905974] Funding Source: National Science Foundation
Solids built out of active components can exhibit nonreciprocal elastic coefficients that give rise to non-Hermitian wave phenomena. Here, we investigate non-Hermitian effects present at the boundary of two-dimensional active elastic media obeying two general assumptions: their microscopic forces conserve linear momentum and arise only from static deformations. Using continuum equations, we demonstrate the existence of the non-Hermitian skin effect in which the boundary hosts an extensive number of localized modes. Furthermore, lattice models reveal non-Hermitian topological transitions mediated by exceptional rings driven by the activity level of individual bonds.
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