230 citations · 1.7k across the 41 of their papers we have counts for
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N=2 SU Quiver with USP Ends or SU Ends with Antisymmetric Matter
Dimitri Nanopoulos, Dan Xie
We consider the four dimensional scale invariant N=2 SU quiver gauge theories with USp(2N) ends or SU(2N) ends with antisymmetric matter representations. We argue that these theori…
Quark Masses from Gaugino Condensation in String Theories
Christos Kokorelis, Van E. Mayes, Dimitri V. Nanopoulos
We present a mechanism able to generate the perturbatively absent up/down quark Yukawa couplings of SU(5)/flipped SU(5) GUTS in Type II…
Stringy WIMP Detection and Annihilation
James A. Maxin, Van E. Mayes, Dimitri V. Nanopoulos
We calculate the direct dark matter detection spin-independent and proton spin-dependent cross-sections for a semi-realistic intersecting D6-brane model. The cross-sections are com…
Time Delays of Strings in D-particle Backgrounds and Vacuum Refractive Indices
Tianjun Li, Nick E. Mavromatos, Dimitri V. Nanopoulos +1
Using standard techniques in string/D-brane scattering amplitude computations, we evaluate the scattering of open strings off D-particles in brane world scenarios. The D-particles…
Probing a Possible Vacuum Refractive Index with Gamma-Ray Telescopes
John Ellis, N. E. Mavromatos, D. V. Nanopoulos
We have used a stringy model of quantum space-time foam to suggest that the vacuum may exhibit a non-trivial refractive index depending linearly on gamma-ray energy: eta -1 ~ E_gam…