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The appearance of scalar/moduli fields in the early universe, as motivated bystring theory, naturally leads to non-thermal "moduli cosmology". Suchcosmology provides a consistent framework where the generation of radiation,baryons, and dark matter can occur while maintaining successful Big BangNucleosynthesis and avoiding the cosmological moduli problem. We present arelatively economical construction with moduli cosmology, building on a varietyof string-inspired components (e.g. supersymmetry, discrete symmetries,Green-Schwarz anomaly cancellation). We address a range of outstanding problemsof particle physics and cosmology simultaneously, including the fermion masshierarchy and flavor puzzle, the smallness of neutrino masses, baryogenesis anddark matter. Our setup, based on discrete $\mathrm{Z}_{12}^{R}$ symmetry andanomalous $\mathrm{U}(1)_A$, is void of the usual issues plaguing the MinimalSupersymmetric Standard Model, i.e. the $\mu$-problem and the overly-rapidproton decay due to dimension-4,-5 operators. The model is compatible with$\mathrm{SU}(5)$ Grand Unification. The smallness of Dirac neutrino masses isautomatically established by requiring the cancellation of mixedgravitational-gauge anomalies. The decay of the moduli field provides a commonorigin for the baryon number and dark matter abundance, explaining the observedcosmic coincidences, $\Omega_{B} \sim \Omega_{DM}$.

Baryogenesis, Dark Matter, and Flavor Structure in Non-thermal Moduli Cosmology