| Answer | Crossword Clue |
|---|---|
| gravitons | A hypothetical quantum of gravitational energy, regarded as a particle |
| quasiparticle | A quantum of energy in a crystal lattice or other system of bodies that has momentum and position and can in some respects be regarded as a particle |
| quasiparticles | A quantum of energy in a crystal lattice or other system of bodies that has momentum and position and can in some respects be regarded as a particle |
