This is an author correction notice for a previously published article in the journal. The notice indicates that changes or clarifications have been made to the original content of the article. Such corrections are common in scientific literature to ensure the accuracy and integrity of the information presented.

Although the notice does not detail the specific nature of the correction, the original article's title, "Parity–time symmetry and exceptional points in electronic circuits," suggests that the work focuses on applying concepts of parity-time (PT) symmetry and exceptional points in the design and analysis of electronic circuits. PT symmetry is a concept that has gained prominence in physics in recent decades, especially in non-Hermitian systems, where energy conservation is not guaranteed but interesting symmetry properties can be observed.

Exceptional points are singularities in the spectrum of a non-Hermitian operator, where not only eigenvalues but also eigenvectors coalesce. These points have proven to be of great interest for applications in high-sensitivity sensors, lasers, and other photonic and electronic devices, due to their unique response properties to perturbations. Applying these concepts to electronic circuits allows for the exploration of new functionalities and behaviors not possible in conventional systems.

Author corrections are a standard mechanism in scientific publishing to rectify errors, add clarifications, or update information that might have been overlooked during the initial review process. They ensure that the final version of the work is as accurate and reliable as possible for the scientific community.