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Flipped SU(5) From D-branes With Type IIB Fluxes
Ching-Ming Chen, V. E. Mayes, D. V. Nanopoulos
We construct flipped SU(5) GUT models as Type IIB flux vacua on orientifolds. Turning on supergravity self-dual NSNS and RR three-form fluxes fixes the toroidal c…
On Geometrical Interpretation of Non-Abelian Flat Direction Constraints
G. B. Cleaver, D. V. Nanopoulos, J. T. Perkins +1
In order to produce a low energy effective field theory from a string model, it is necessary to specify a vacuum state. In order that this vacuum be supersymmetric, it is well know…
UHECR Particle Spectra from Crypton Decays
John Ellis, V. E. Mayes, D. V. Nanopoulos
We calculate the spectra of ultra-high-energy cosmic rays (UHECRs) in an explicit top-down model based on the decays of metastable neutral `crypton' states in a flipped SU(5) strin…
Standard-Like Model Building on Type II Orientifolds
Ching-Ming Chen, Tianjun Li, Dimitri V. Nanopoulos
We construct new Standard-like models on Type II orientifolds. In Type IIA theory on orientifold with intersecting D6-branes, we first construct a…
Robust Limits on Lorentz Violation from Gamma-Ray Bursts
John Ellis, Nick E. Mavromatos, Dimitri V. Nanopoulos +2
We constrain the possibility of a non-trivial refractive index in free space corresponding to an energy-dependent velocity of light: c(E) \simeq c_0 (1 - E/M), where M is a mass sc…
On the Higgs Mass in the CMSSM
John Ellis, Dimitri Nanopoulos, Keith A. Olive +1
We estimate the mass of the lightest neutral Higgs boson h in the minimal supersymmetric extension of the Standard Model with universal soft supersymmetry-breaking masses (CMSSM),…
Liouville Cosmology at Zero and Finite Temperatures
J. Ellis, N. E. Mavromatos, M. Westmuckett +1
We discuss cosmology in the context of Liouville strings, characterized by a central-charge deficit Q^2, in which target time is identified with (the world-sheet zero mode of the)…
A K-theory Anomaly Free Supersymmetric Flipped SU(5) Model from Intersecting Branes
C. -M. Chen, G. V. Kraniotis, V. E. Mayes +2
We construct an N=1 supersymmetric three-family flipped SU(5) model from type IIA orientifolds on with D6-branes intersecting at general angles. The model i…
Theory and Experiments on the "Quantum Mind"
Andreas Mershin, Dimitri V. Nanopoulos
This article is a short summary, in Greek, of work presented in English in the following articles: 1. Mershin et al. "Towards Experimental Tests of Quantum Effects in Cytoskeletal…
Towards Experimental Tests of Quantum Effects in Cytoskeletal Proteins
Andreas Mershin, Hugo Sanabria, John H. Miller +7
It has become increasingly evident that fabrication of novel biomaterials through molecular self-assembly is going to play a significant role in material science and possibly the i…
The String Coupling Accelerates the Expansion of the Universe
John Ellis, N. E. Mavromatos, D. V. Nanopoulos
Generic cosmological models in non-critical string theory have a time-dependent dilaton background at a late epoch. The cosmological deceleration parameter Q_0 is given by the squa…
Liouville Cosmology
John Ellis, N. E. Mavromatos, D. V. Nanopoulos
Liouville string theory is a natural framework for discussing the non-equilibrium evolution of the Universe. It enables non-critical strings to be treated in mathematically consist…
A Supersymmetric Flipped SU(5) Intersecting Brane World
C. -M. Chen, G. V. Kraniotis, V. E. Mayes +2
We construct an N=1 supersymmetric three-family flipped SU(5) model from type IIA orientifolds on with D6-branes intersecting at general angles. The spectru…