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Identifying and analyzing Java exception handling guidelines: a developers point-of-view
(Universidade Federal do Rio Grande do NorteBrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM SISTEMAS E COMPUTAÇÃO, 2019-11-29)
The exception handling mechanism is a feature present in most modern programming
languages which helps the development of fault tolerant systems. Despite being an old
feature of the Java language, developers still struggle ...
Enhanced energy harvesting near exceptional points in systems with (pseudo-) PT-symmetry
(Nature, 2021-04)
Exceptional point degeneracies, occurring in non-Hermitian systems, have challenged many well established concepts and led to the development of remarkable technologies. Here, we propose a family of autonomous motors whose ...
Exceptional point in a simple textbook example
(IOP Publishing, 2018-05)
We propose to introduce the concept of exceptional points in intermediate courses on mathematics and classical mechanics by means of simple textbook examples. The first one is an ordinary second-order differential equation ...
Exceptional points of the eigenvalues of parameter-dependent Hamiltonian operators
(Springer, 2021-01)
We calculate the exceptional points of the eigenvalues of several parameter-dependent Hamiltonian operators of mathematical and physical interest. We show that the calculation is greatly facilitated by the application of ...
Exceptional Points from the hamiltonian of a hybrid physical system: squeezing and anti-squeezing
(Springer, 2020-09)
We study the appearance of Exceptional Points in a hybrid system composed of a superconducting flux-qubit and an ensemble of nitrogen-vacancy colour centres in diamond. We discuss the possibility of controlling the generation ...
Critical parameters for non-hermitian Hamiltonians
(Elsevier, 2014-09-17)
We calculate accurate critical parameters for a class of non-hermitian Hamiltonians by means of the diagonalization method. We study three one-dimensional models and two perturbed rigid rotors with PT symmetry. One of the ...
On the crossing of the energy levels of a parameter-dependent quantum-mechanical Hamiltonian
(Springer, 2014-07-17)
The non-crossing rule for the energy levels of a parameter-dependent Hamiltonian is revisited and a flaw in a commonly accepted proof is revealed. Some aspects of avoided crossings are illustrated by means of simple models. ...
Swanson Hamiltonian: non-PT-symmetry phase
(IOP Publishing, 2021-12)
In this work, we study the non-Hermitian Swanson Hamiltonian, particularly the non-parity-time symmetry phase. We use the formalism of Gel´fand triplet to construct the generalized eigenfunctions and the corresponding ...