Quantum Mechanics：An Introduction

ThetextQuantumMechanics-AnIntroductionhasfoundmanyfriendsamongphysicsstudentsandresearcherssothattheneedforathirdeditionhasarisen.TherewasnoneedforamajorrevisionofthetextbutIhavetakentheopportunitytomakeseveralamendmentsandimprovements.Anumberofmisprintsandminorerrorshavebeencorrectedandafewclarifyingremarkshavebeenaddedatvariousplaces.Afewfigureshavebeenaddedorrevised，inparticularthethree-dimensionaldensityplotsinChap.9.Iamgratefultoseveralcolleaguesforhelpfulcomments，inparticulartoProf.R.A.King(Calgary)whosuppliedacomprehensivelistofcorrections.IalsothankDr.A.ScherdinforhelpwiththefiguresandDr.R.Mattiellowhohassupervisedthepreparationofthethirdeditionofthebook.FurthermoreIacknowledgetheagreeablecollaborationwithDr.H.1.KolschandhisteamatSpringer-Verlag，Heidelberg.