I can't seem to find a source that explains what happens when there are strings between one brane and another brane, where one brane ends on the other brane. For example, consider a D3-brane ending on an NS5-brane. Can anybody point me to a source that explains how to interpret the strings between the two, or if such strings are even permitted. If such strings are permitted what are the resulting fields on the NS5-brane and on the D3-brane?
Edit: As @OON has pointed out in the comments below, fundamental strings don't end on NS5-branes. I would be very grateful if some source describing strings between two D-branes, where one D-brane ends on another D-brane, could be provided. Would the spectrum be the same as for two intersecting D-branes?