In this paper, we investigate negative eigenvalues of exactly solvable quantum models, particularly one-dimensional Hamiltonians with δ′-like potentials used to represent localized dipoles. These ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

Recently, in order to find the principal moments of inertia of a large number of rigid bodies, it was necessary to compute the eigenvalues of many real, symmetric 3 × 3 matrices. The available ...

The Nature Index 2024 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

Closeup rear view of a young man coding on multiple computers Software developers at the office. Closeup side view of a young man coding on multiple computers early in the morning. 2x2 matrix stock ...

Identification of alcoholism is clinically important because of the way it affects the operation of the brain. Alcoholics are more vulnerable to health issues, such as immune disorders, high blood ...

Mr. Earle is a British journalist who writes on politics and culture. When “The Matrix” was released in 1999, hype about the internet had reached a frenzy. Time magazine had named a young Jeff Bezos ...

Back in sympy 1.5.1 days I ran some calculations where I needed to get the eigenvalues of a hermitian 4x4 matrix. Now I just tried running the calculations again with sympy 1.9 and they fail miserably ...