89 citations
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21 papers · 1 filter
On RR couplings on D-branes at order
Mohammad R. Garousi, Mozhgan Mir
Recently, it has been found that there are couplings of the RR field strength and the B-field strength on the world volume of D-branes at order .…
Disk level S-matrix elements at eikonal Regge limit
Mohammad R. Garousi
We examine the calculation of the color-ordered disk level S-matrix element of massless scalar vertex operators for the special case that some of the Mandelstam variables for which…
Charged Black Holes in New Massive Gravity
Ahmad Ghodsi, Mohammad Moghadassi
We construct charged black hole solutions to three-dimensional New Massive Gravity (NMG), by adding electromagnetic Maxwell and Chern-Simons actions. We find charged black holes in…
T-duality of anomalous Chern-Simons couplings
Mohammad R. Garousi
It is known that the anomalous D-brane Chern-Simons couplings are not consistent with the standard rules of T-duality. Using compatibility of these couplings with the linear T-…
Ramond-Ramond field strength couplings on D-branes
Mohammad R. Garousi
By examining in details the disk level S-matrix element of one massless RR and one NSNS states at order O(α'^2), we find the coupling of one RR and one NSNS fields on the world vol…
More on WZ action of non-BPS branes
Mohammad R. Garousi, Ehsan Hatefi
We calculate the disk level S-matrix element of one Ramond-Ramond, two gauge fields and one tachyon vertex operators in the world volume of non-BPS branes. We then find the momentu…