| 內容簡介 | ThemainpartofthisbookisdevotedtothesimplestkindofGreen'sfunctions,namelythesolutionsoflineardifferentialequationswithadeltafunctionsource.ItisshownthatthesefamiliarGreen'sfunctionsareapowerfultoolforobtainingrelativelysimpleandgeneralsolutionsofbasicquantumproblemssuchasscatteringandbound-levelinformation.Thebound-leveltreatmentgivesaclearphysicalunderstandingof"difficult"questionssuchassuperconductivity,theKondoeffect,and,toalesserdegree,disorder-inducedlocalization.Themoreadvancedsubjectofmany-bodyGreen'sfunctionsispresentedinthelastpartofthebook |