I'm trying to get some intuition for the meaning of the actions in string theory.
In string theory, the action for bosonic strings (i.e. Nambu-Goto action) has a straight forward physical interpretation: it is the area of the world sheet. I have not taken a course that has covered the fermionic string in any kind of depth, but I was wondering if there is a nice intuitive, physical meaning for the fermionic string actions?
Additionally, for the bosonic action, the target space is just the space in which the string lives. What is the physical meaning of the target space for the fermionic action?