Related by context. Frequent words. (Click for all words.) 65 atomic nuclei 64 GeV 63 atoms 62 fermions 61 nuclei 60 atomic nucleus 59 phonons 59 positron 59 neutrons 59 photons 58 dimer 58 excitons 58 magnetic flux 58 alpha particles 58 spacetime 58 magnetization 58 conformations 58 Bose Einstein condensate 58 hydrogen atoms 57 proton 57 subatomic 57 WIMPs 57 photon 57 vortices 57 supersymmetry 56 muons 56 electron beams 56 Earth magnetosphere 56 amplitudes 56 electron spin 56 helices 56 electrons 56 picoseconds 56 neutrino 56 radioactive decay 56 particle 56 crystal lattice 56 quark 56 magnetic fields 55 atomic particles 55 electron 55 positrons 55 galaxy clusters 55 z = 55 anisotropic 55 subatomic particles 55 quarks 54 galaxy formation 54 dynamical 54 oxygen atoms 54 picosecond 54 muon 54 quark gluon plasma 54 spectroscopic 54 spectra 54 dimers 54 hydrogen atom 54 GRBs 54 biological molecules 54 radiative 54 FRET 54 femtoseconds 54 high temperature superconductivity 53 high temperature superconductors 53 reactants 53 chirality 53 gravitational wave 53 protons 53 isotropic 53 isomers 53 ionized gas 53 photonic crystal 53 ions 53 interfacial 53 electron volts 53 anisotropy 53 particles 53 gravitational lensing 53 molecules 53 quantum mechanical 53 electromagnetism 53 superfluid 53 hafnium 53 neutrinos 52 deuterium 52 oxygen atom 52 graphene sheets 52 qubit 52 Supplementary Fig 52 SWNTs 52 nanocrystal 52 microstructures 52 interferometer 52 cosmological constant 52 nanometer sized 52 neutron stars 52 quantum entanglement 52 elliptical galaxies 52 scalar 52 X ray emission 52 particle beams