Author Archives: Sung Lee

There is a new TV series titled Constellation on Apple TV+. The plot so far (I don’t intend to be a spoiler and I don’t actually know much about the plot either because there have been only three episodes) is … Continue reading →

Replacing $E$ and $p$ by $i\hbar\frac{\partial}{\partial t}$ and $-i\hbar\nabla$, respectively, in the energy-momentum relation $$E^2=p^2c^2+m_0^2c^4$$ we obtain the Klein-Gordon operator $$\square=\frac{m_0^2c^2}{\hbar^2},$$ where $$\square=-\frac{1}{c^2}\frac{\partial^2}{\partial t^2}+\nabla^2$$ $\square$ is called the d’Alembertian or the wave operator. This time, replacing $E$ and $p$ by … Continue reading →