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Realistic Type IIB Supersymmetric Minkowski Flux Models without the Freed-Witten Anomaly
Ching-Ming Chen, Tianjun Li, Dimitri V. Nanopoulos
We show that there exist supersymmetric Minkowski vacua on Type IIB toroidal orientifold with general flux compactifications where the RR tadpole cancellation conditions can be rel…
F-SU(5)
Jing Jiang, Tianjun Li, Dimitri V. Nanopoulos +1
We construct three flipped SU(5) X U(1)_X models from F-theory, and consider two such models from free fermionic string model building. To achieve the decoupling scenario in F-theo…
Supergravity and Superstring Signatures of the One-Parameter Model at LHC
James A. Maxin, Van E. Mayes, Dimitri V. Nanopoulos
Many string constructions have a classical no-scale structure, resulting in a one-parameter model (OPM) for the supersymmetry breaking soft terms. As a highly constrained subset of…
Supersymmetry Signals of Supercritical String Cosmology at the Large Hadron Collider
Bhaskar Dutta, Alfredo Gurrola, Teruki Kamon +4
We investigate the minimal supergravity (mSUGRA) signals at the LHC in the context of supercritical string cosmology (SSC). In this theory, the presence of a time dependent dilaton…
Yukawa Corrections from Four-Point Functions in Intersecting D6-Brane Models
Ching-Ming Chen, Tianjun Li, V. E. Mayes +1
We discuss corrections to the Yukawa matrices of the Standard Model (SM) fermions in intersecting D-brane models due to four-point interactions. Recently, an intersecting D-brane m…
Flux Parameter Spaces in Type II Vacua
Ching-Ming Chen, Tianjun Li, Dimitri V. Nanopoulos
We study the flux parameter spaces for semi-realistic supersymmetric Pati-Salam models in the AdS vacua on Type IIA orientifold and realistic supersymmetric Pati-Salam models in th…
Derivation of a Vacuum Refractive Index in a Stringy Space-Time Foam Model
John Ellis, N. E. Mavromatos, D. V. Nanopoulos
It has been suggested that energetic photons propagating in vacuo should experience a non-trivial refractive index due to the foamy structure of space-time induced by quantum-gravi…