# Does the absence of a sound particle indicate that there are no photons?

Sound is usually referred to as just "sound waves" - we do not talk about a "sound particle" and only as a wave or "matter wave."

Could something similar apply to light i.e. that there really is no "light particle" (photon) and that the wave representation is what applies both to sound and light?

We say light is an electromagnetic movement, could it be that light is an electromagnetic movement with just movement and similarly to sound like there is no "sound particle" (only a movement that makes some sound from vibration and movement of particles that are "ordinary" particles in the air and not in fact any particular "sound particle" so similarly the photon could be just a name or just a concept in fact used to describe what is similar to sound and just a wave and not a special particle?

I know this seems controversial like saying that there is no photon and I say it might be not that controversial since there is no particular particle for sound and a waveform only.

Thanks for any insight!

The premmise of this question is flawed. As anna v said, not only do "sound particles" called "phonons" exist, but physicists talk about them all the time. It isn't some obscure niche subject - any practicing solid-state physicist is familiar with the concept. And phonons are extremely similar to photons - they are both gapless bosonic Goldstone-mode excitations emerging from a spontaneously broken continuous symmetry, with (at least emergent) Lorentz symmetry and dispersion relations of the form $\omega \propto k$ (at least for small $k$).