Into the Quantum world

If ghosts are purely energy, then it seems not reasonable for it to exist for long. Since energy in open space will soon dissipate. So personally I believe that ghosts consist of some unknown particles. Quantum physics is still a growing field, and physicists are discovering more and more particles that have some very curious properties. For example, neutrino, which possibly has no mass. It also has no electric or magnetic field. So neutrinos rarely interact with matters. It travel at high speed and can pass through solid objects. In fact, millions of them are passing your body right now. Assuming that ghosts are actually made of particles, what are the properties of these particles? Some people conjecture that ghosts can travel at high speed, perhaps beyond the speed of light. There are 3 types of particles: tardyons, luxons, and tachyons. Tardyons are ordinary particles that have mass, such as neutron and electron. These particles cannot reach the speed of light. Luxons are particles that can travel at the speed of light but not beyond it, for example, photons and gravitons. Tachyons (‘Takhus’ is a Greek word for swift) are speculative particles that when created, already possessed speed that is faster than light. It cannot travel at or below the speed of light. It has many strange properties. For example, the more you increase your speed to catch up with it, the greater its speed will be relative to you. This is similar to luxons, which remain at the speed of light regardless of what your speed is. You can read more about the properties of tachyons on a separate article. It is suffices to say that tachyons cannot interact with normal matter like ghosts do. Hence ghosts, if they exist at all, are certainly not tachyons. Furthermore if ghosts are souls, and ghosts are tachyons, we will all have tachyons in us! That is certainly unimaginable. Ghosts cannot be luxons too since that will mean they can only travel at the speed of light. Obviously sightings of ghosts show otherwise. So ghosts can only be tardyons, just like us. Their mass is probably very light and therefore it is not surprising to see orbs travel at high speed (if orbs are ghosts). Ghosts may be able to pass through ordinary matters, depends on the properties of the particles that made them.