Non-hermitian physics
A review is given on the foundations and applications of non-Hermitian classical and
quantum physics. First, key theorems and central concepts in non-Hermitian linear algebra …
quantum physics. First, key theorems and central concepts in non-Hermitian linear algebra …
Exceptional topology of non-Hermitian systems
The current understanding of the role of topology in non-Hermitian (NH) systems and its far-
reaching physical consequences observable in a range of dissipative settings are reviewed …
reaching physical consequences observable in a range of dissipative settings are reviewed …
Non-Hermitian topology in static mechanical metamaterials
The combination of broken Hermiticity and band topology in physical systems unveils a
novel bound state dubbed as the non-Hermitian skin effect (NHSE). Active control that …
novel bound state dubbed as the non-Hermitian skin effect (NHSE). Active control that …
Topological metamaterials
The topological properties of an object, associated with an integer called the topological
invariant, are global features that cannot change continuously but only through abrupt …
invariant, are global features that cannot change continuously but only through abrupt …
3D metamaterials
Metamaterials are rationally designed composites aiming at effective material parameters
that go beyond those of the ingredient materials. For example, negative metamaterial …
that go beyond those of the ingredient materials. For example, negative metamaterial …
Observation of higher-order topological acoustic states protected by generalized chiral symmetry
Topological systems are inherently robust to disorder and continuous perturbations,
resulting in dissipation-free edge transport of electrons in quantum solids, or reflectionless …
resulting in dissipation-free edge transport of electrons in quantum solids, or reflectionless …
Observation of non-Hermitian topology and its bulk–edge correspondence in an active mechanical metamaterial
A Ghatak, M Brandenbourger… - Proceedings of the …, 2020 - National Acad Sciences
Topological edge modes are excitations that are localized at the materials' edges and yet
are characterized by a topological invariant defined in the bulk. Such bulk–edge …
are characterized by a topological invariant defined in the bulk. Such bulk–edge …
Flexible mechanical metamaterials
Mechanical metamaterials exhibit properties and functionalities that cannot be realized in
conventional materials. Originally, the field focused on achieving unusual (zero or negative) …
conventional materials. Originally, the field focused on achieving unusual (zero or negative) …
Observation of a phononic quadrupole topological insulator
The modern theory of charge polarization in solids, is based on a generalization of Berry's
phase. The possibility of the quantization of this phase, arising from parallel transport in …
phase. The possibility of the quantization of this phase, arising from parallel transport in …
Topological nodal line phonons: Recent advances in materials realization
The topological phenomenon has been extensively studied in condensed matter physics
and has attracted much attention in many different fields. Like electrons, phonons can also …
and has attracted much attention in many different fields. Like electrons, phonons can also …