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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
EJ Bergholtz, JC Budich, FK Kunst - Reviews of Modern Physics, 2021 - APS
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 …
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 …
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 …
3D metamaterials
M Kadic, GW Milton, M van Hecke… - Nature reviews physics, 2019 - nature.com
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 non-Hermitian topology and its bulk–edge correspondence in an active mechanical metamaterial
A Ghatak, M Brandenbourger, J Van Wezel… - Proceedings of the …, 2020 - pnas.org
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 …
Observation of higher-order topological acoustic states protected by generalized chiral symmetry
X Ni, M Weiner, A Alu, AB Khanikaev - Nature materials, 2019 - nature.com
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 …
Tailoring structure‐borne sound through bandgap engineering in phononic crystals and metamaterials: a comprehensive review
M Oudich, NJRK Gerard, Y Deng… - Advanced Functional …, 2023 - Wiley Online Library
In solid state physics, a bandgap (BG) refers to a range of energies where no electronic
states can exist. This concept was extended to classical waves, spawning the entire fields of …
states can exist. This concept was extended to classical waves, spawning the entire fields of …
Flexible mechanical metamaterials
K Bertoldi, V Vitelli, J Christensen… - Nature Reviews …, 2017 - nature.com
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) …
Topological phonons and thermoelectric conversion in crystalline materials
Topological phononics, a fascinating frontier in condensed matter physics, holds great
promise for advancing energy‐related applications. Topologically nontrivial phonons …
promise for advancing energy‐related applications. Topologically nontrivial phonons …