  We investigate the connection between the entanglement system in Minkowski
spacetime and the black hole using the scaling analysis. Here we show that the
entanglement system satisfies the Bekenstein entropy bound. Even though the
entropies of two systems are the same form, the entanglement energy is
different from the black hole energy. Introducing the Casimir energy of the
vacuum energy fluctuations rather than the entanglement energy, it shows a
feature of the black hole energy. Hence the Casimir energy is more close to the
black hole than the entanglement energy. Finally, we find that the entanglement
system behaves like the black hole if the gravitational effects are included
properly.
