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MSSM via Pati-Salam from Intersecting Branes on
Ching-Ming Chen, V. E. Mayes, D. V. Nanopoulos
We construct an MSSM-like model via Pati-Salam from intersecting D-branes in Type IIA theory on the orientifold where the D-branes wrap rigid 3-cycles. Because…
Smoothly evolving Supercritical-String Dark Energy relaxes Supersymmetric-Dark-Matter Constraints
A. B. Lahanas, N. E. Mavromatos, D. V. Nanopoulos
We show that Supercritical-String-Cosmology (SSC) off-equilibrium and time-dependent-dilaton effects lead to a smoothly evolving dark energy for the last 10 billion years in concor…
Testable Flipped SU(5) x U(1)_X Models
Jing Jiang, Tianjun Li, Dimitri V. Nanopoulos
The little hierarchy between the GUT scale and the string scale may give us some hints that can be tested at the LHC. To achieve string-scale gauge coupling unification, we introdu…
Dilaton and off-shell (non-critical string) effects in Boltzmann equation for species abundances
A. B. Lahanas, N. E. Mavromatos, D. V. Nanopoulos
In this work we derive the modifications to the Boltzmann equation governing the cosmic evolution of relic abundances induced by dilaton dissipative-source and non-critical-string…
CPT and Quantum Mechanics Tests with Kaons
Jose Bernabeu, John Ellis, Nick E. Mavromatos +2
In this review we first discuss the theoretical motivations for possible CPT violation and deviations from ordinary quantum-mechanical behavior of field-theoretic systems in the co…
Dissipative Liouville Cosmology: A Case Study
G. A. Diamandis, B. C. Georgalas, A. B. Lahanas +2
We consider solutions of the cosmological equations pertaining to a dissipative, dilaton-driven off-equilibrium Liouville Cosmological model, which may describe the effective field…
Flipped and Unflipped SU(5) as Type IIA Flux Vacua
Ching-Ming Chen, Tianjun Li, Dimitri V. Nanopoulos
On Type IIA orientifolds with flux compactifications in supersymmetric AdS vacua, we for the first time construct SU(5) models with three anti-symmetric {\bf 10} representations an…
Confronting Dark Energy Models with Astrophysical Data: Non-Equilibrium vs. Conventional Cosmologies
J. R. Ellis, N. E. Mavromatos, V. A. Mitsou +1
We discuss fits of cosmological dark energy models to the available data on high-redshift supernovae. We consider a conventional model with Cold Dark Matter and a cosmological cons…
Type IIA Pati-Salam Flux Vacua
Ching-Ming Chen, Tianjun Li, Dimitri V. Nanopoulos
We show that for supersymmetric AdS vacua on Type IIA orientifolds with flux compactifications, the RR tadpole cancellation conditions can be completely relaxed, and then the four-…