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Generalized Born--Infeld Actions and Projective Cubic Curves
S. Ferrara, M. Porrati, A. Sagnotti +2
We investigate supersymmetric Born-Infeld Lagrangians with a second non-linearly realized supersymmetry. The resulting non-linear structure is more complex than the sq…
String Theory clues for the low- CMB ?
N. Kitazawa, A. Sagnotti
"Brane Supersymmetry Breaking" is a peculiar string-scale mechanism that can unpair Bose and Fermi excitations in orientifold models. It results from the simultaneous presence, in…
N=2 Born-Infeld Attractors
S. Ferrara, M. Porrati, A. Sagnotti
We derive new types of Born-Infeld actions based on N=2 special geometry in four dimensions. As in the single vector multiplet (n=1) case, the non--linear actions originat…
Pre - Inflationary Clues from String Theory ?
N. Kitazawa, A. Sagnotti
"Brane supersymmetry breaking" occurs in String Theory when the only available combinations of D-branes and orientifolds are not mutually BPS and yet do not introduce tree-level ta…