Post on 16-Dec-2015
From Inflation to Galaxies Formation in the Braneword Scenario
Tonatiuh Matos, Miguel Alcubierre, Ruben Cordero, Ricardo Becerril, Hugo Compean,
F. Siddhartha Guzman, Dario Nuñez, Luis Ureña, Argelia Bernal,
Ahttp:/www.fis.cinvestav.mx/~tmatos
• Superstrings Model • Braneword • Inflation DM• SnIa• Mass Power Spectrum• Angular Power Spectrum• Galaxies Formation
The ModelT. Matos, H. Compean, R. Cordero, in preparation.
• Braneword Scenario:• The radion must be stabilized• Superstrings • V f1exp() + f2exp(-) + …
• V = V0[cosh() – 1] exp()
• H2 = 8/(3Mpl2) (1 + /b)
• Inflation graceful exit• BBN Cosmology • Fix the free constants.
The CosmologyT. Matos and L. Ureña, Class. Q. Grav. 17(2000)L75
• Dark Matter:•
• V0[cosh() –1]
• Dark Energy:•
• Baryons, • Neutrinos, etc.
0.25
0.7
b 0.05
Scalar Field Fluctuations
T. Matos and L. Ureña, Phys. Rev. D63(2001)063506
Results:
Natural Cut-off
Summarizing
• SFDM model is insensitive to initial conditions
• Behaves as CDM
• Reproduces all the successes CDM above galactic scales.
• Predicts a sharp cut-off in the mass power spectrum
• The favored values for the two free parameters 20 V0 (310-27 Mpl )4 m 10-23 eV
Numerical SimulationsMiguel Alcubierre, F. Siddhartha Guzman, Tonatiuh Matos, Dario Nuñez,
Luis A. Ureña and Petra Wiederhold. Class. Quant. Grav 19(2002)5017.
Oscillatons
Scalar Field Fluctuation=HaloTonatiuh Matos and F. Siddhartha Guzman Class. Q. Grav. 17(2000)L9;
Tonatiuh Matos, F. Siddhartha Guzman and Dario Nuñez, Phys. Rev. D62(2000)061301(R);
The Newtonian Force
WIMPs• Density profile in Galaxies
(r) r as r 0• Numerical Simulations -1.5 NFW(r)1/r 1/(r+b)2
• Observations - 0.5 - 0
• Number of Dwarf Galaxies >>
Dwarf Galaxies
The Critical MassTonatiuh Matos and F. Siddhartha Guzman, Class.Q. Grav. 18(2001)5055
• M 0.1 M2Planck /m
• If m 10-23 eV
• M 1012 Mo
Perfil de densidad
Galaxy Formation at z=7
Metalicity in z=2
Scalar Field DM Cross SectionTonatiuh Matos and Luis A. Ureña, Phys. Lett. B538 (2002)246.
• cosh is renormalizable
• SFDM 22/ m = 82exp(I2)/[64(m)3]
• Reparametrizations factor = exp[2o2/(322)]
• Internal Contraction I 1/(162)
• If 2 MPl
22/ m = 10-25 - 10-23 cm2/GeV
The Inflaton as SFDMJames Lidsey, Tonatiuh Matos and Luis A. Ureña, Phys.Rev.,D66(2002)023514.
• Braneworld scenario: H2 = 8/(3Mpl2) (1 + /b)
b 2.881051GeV4
• V V0exp((8)/ Mpl)
• i 1.94 Mpl Vi 1.631056GeV4
end 1.90 Mpl Vend 2.331054GeV4
• Mpbh 109 Mpl tevap 10-16 s 0 10-18
Einst < 1.80 Mpl Einst. << b
pbh > 1.06 Mpl
exp > 0.01 Mpl
Conclusion
• The scalar field is a good candidate to be the Dark Matter of the
Universe