Nikolaos Tetradis

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Coupled quintessenceThe field has a potential V(φ) ∼ φ −α , with α = 0.143.The present-day energy content of the Universe hasΩ DE = 0.743, Ω CDM = 0.213, Ω BM = 0.044.The Universe is assumed to have vanishing spatial curvature(Ω k = 0), current expansion rate H 0 = 71.9 km s −1 Mpc −1 .The mass variance is taken σ 8 = 0.769, as calculated from thelinear spectrum.F. Saracco, M. Pietroni, N. T., V. Pettorino, G. RobbersarXiv:0911.5396[astro-ph], Phys. Rev. D 82: 023528 (2010)N. <strong>Tetradis</strong> University of AthensThe inhomogeneity of the Universe and the cosmological model
7Density-Density Power Spectra at z=0 (β=0.05)65PS/PS lin43210.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.11.2k (h/Mpc)P cc (TRG) P bb (TRG) P cc (N-Body) P bb (N-Body)Figure: Comparison of results from N-body simulations and our calculation(β = 0.05). We display the ratio of the non-linear and linear spectra for z = 0.N. <strong>Tetradis</strong> University of AthensThe inhomogeneity of the Universe and the cosmological model
Page 2: Figure: 2MASS Galaxy Catalog (more
Page 5 and 6: Standard frameworkBasic assumptions
Page 7 and 8: Our approachAll the information abo
Page 9 and 10: Luminosity distance and redshiftCon
Page 11 and 12: Observer and source at random posit
Page 13 and 14: A similar problem in brane cosmolog
Page 15 and 16: Basic relationsAction∫S =d 4 x
Page 17 and 18: Static spherically symmetric config
Page 19 and 20: Compact astrophysical objects made
Page 21 and 22: Astrophysical objects made of neutr
Page 23 and 24: Sloan Digital Sky Survey (2005)Figu
Page 25 and 26: Ansatz for the metricds 2 = a 2 (τ
Page 27 and 28: Equations of motion for several non
Page 29 and 30: Time renormalization group (Pietron
Page 31 and 32: The non-zero components of the effe
Page 33: In this way we obtain∂ η P ab (k
Page 37 and 38: 1.7BAO Power Spectra at z=0 (β=0.1
Page 39 and 40: wz0.40.60.81.01.41.62 4 6 8 10 zFig
Page 41 and 42: ∆k i k i,lin0.0150.0100.005(2)0.0
Page 43 and 44: Growing neutrino quintessence i , q
Page 45: ConclusionsThe inhomogeneities in t

Nikolaos Tetradis

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