Gt. Horowitz et D. Marolf, COUNTING STATES OF BLACK STRINGS WITH TRAVELING WAVES .2., Physical review. D. Particles and fields, 55(2), 1997, pp. 846-852
We extend our recent analysis of the entropy of extremal black strings
with traveling waves. We previously considered waves carrying linear
momentum on black strings in six dimensions. Here we study waves carry
ing angular momentum on these strings, and also waves carrying linear
momentum on black strings in five dimensions. In both cases, we show t
hat the horizon remains homogeneous and compute its area. We also coun
t the number of BPS states at weak string coupling with the same distr
ibution of linear and angular momentum, and find complete agreement wi
th the black string entropy.