11 citations · 42 across the 16 of their papers we have counts for
4 papers · 1 filter
Topics on the geometry of D-brane charges and Ramond-Ramond fields
Fabio Ferrari Ruffino
In this paper we discuss some topics on the geometry of type II superstring backgrounds with D-branes, in particular on the geometrical meaning of the D-brane charge, the Ramond-Ra…
Topics on topology and superstring theory
Fabio Ferrari Ruffino
In this thesis we discuss some topics about topology and superstring backgrounds with D-branes. We start with a mathematical review about generalized homology and cohomology theori…
Revisiting pinors, spinors and orientability
Loriano Bonora, Fabio Ferrari Ruffino, Raffaele Savelli
We study the relations between pin structures on a non-orientable even-dimensional manifold, with or without boundary, and pin structures on its orientable double cover, requiring…
Gysin map and Atiyah-Hirzebruch spectral sequence
Fabio Ferrari Ruffino
We discuss the relations between the Atiyah-Hirzebruch spectral sequence and the Gysin map for a multiplicative cohomology theory, on spaces having the homotopy type of a finite CW…