Results 181 to 190 of about 36,457 (313)

Quantum Anomalies in Condensed Matter

open access: yesAdvanced Physics Research, EarlyView.
Quantum materials provide a fertile ground in which to test and realize quantum anomalies predicted by quantum field theory. Quantum anomalies need to be canceled globally, however, quantum states with a quantum anomaly can exist at the boundary of topological materials.
Michael T. Pettes   +11 more
wiley   +1 more source

Instabilities in Hamiltonian systems

open access: yes, 2017
In 1964, V. I. Arnol'd proved the existence of nearly-integrable Hamiltonian systems which have global instabilities (global chaotic behaviour). This phenomenon is nowadays termed under the name "Arnol'd diffusion". One of the key ideas that he used is to "travel" along invariant manifolds of the Hamiltonian system.
openaire   +1 more source

Surface Local Impurity Scattering as a Probe for Topological Kondo Insulators

open access: yesAdvanced Physics Research, EarlyView.
Impurity scattering smokes out topology! Recent discoveries in topological quantum materials have rekindled excitement for studying particle and high‐energy physics in a condensed matter physics laboratory. By using a minimal‐orbital correlated electron model, this study sheds light on the topological nature of a Kondo insulator via the local ...
C.‐C. Joseph Wang   +3 more
wiley   +1 more source

Frozen Natural Orbitals‐Based Coupled‐Cluster Singles, Doubles, and (full) Triples ‐ A Computational Study

open access: yesChemistry – An Asian Journal, EarlyView.
The frozen natural orbitals (FNO)‐based CCSDT is a cost‐effective approach and provides significant computational speed‐up with rather insignificant errors (standard deviation ∼0.9$\sim 0.9$ millihartrees) – smaller than the CCSDT accuracy limit of ∼1.5$\sim 1.5$ millihartrees.
Manisha, Prashant Uday Manohar
wiley   +1 more source

Full‐order observer design for quadratic port‐controlled Hamiltonian systems

open access: yesAsian Journal of Control, EarlyView.
Abstract The full‐order observer design problem for a particular class of port‐controlled Hamiltonian systems is approached in this paper. The proposed full‐order observer scheme belongs to the structure preserving class of dynamic estimators as it preserves the natural stability properties of the approached class of systems that are useful for the ...
Michael Rojas   +2 more
wiley   +1 more source

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