The wavefunction argument is incorrect. At the level of quantum mechanics, particles’ wave-functions can easily be zero, trivially at points, with a little more effort over ranges. At the level of QFTs, yes vacuum fluctuations kick in, and do prevent space from being “empty”.
The wavefunction argument is incorrect. At the level of quantum mechanics, particles’ wave-functions can easily be zero, trivially at points, with a little more effort over ranges. At the level of QFTs, yes vacuum fluctuations kick in, and do prevent space from being “empty”.