EntityQ4327976· pop 5· linked from 7 articlesZero soundSign in to saveCollective excitation in a Fermi liquidConnectionsFermi liquidEntitysoundEntityInternational Standard Book NumberEntityLev LandauEntityspinEntityquasiparticleEntityphase velocityEntitymean free pathEntityplane waveEntityEvgeny LifshitzEntityBoltzmann equationEntityFermi energyEntitydispersion relationEntityFermi surfaceEntityLev Petrovich PitaevskiiEntitySecond soundEntityrarefactionEntityCategoriesCondensed matter physicsLev LandauStatistical mechanics