%A ?. ?. ?????? %A ?. ?. ???? %J Journal of physical studies %T The exciton spectrum in a cylindrical quantum nanotube %X A theory of the exciton spectrum in the cylindrical nanotube is proposed in the paper. The spectrum of bound exciton states in a nanotube is obtained in the framework of rectangular potentials and electron and hole e?ective masses within the Bethe method. The energy of the exciton ground state calculated for the InP/InAs/InP nanosystem is in good correlation with experimental data. %N 2 %K ???????? ?????, ???????? ??????, ??????????? %P 220-225 %V 11 %D 2007 %L zu29252