Signatures of a Graviton Mass in the Cosmic Microwave Background
نویسندگان
چکیده
There exist consistent low energy effective field theories describing gravity in the Higgs phase that allow the coexistence of massive gravitons and the conventional 1/r potential of gravity. In an effort to constrain the value of the graviton mass in these theories, we study the tensor contribution to the CMB temperature anisotropy and polarization spectra in the presence of a non-vanishing graviton mass. We find that the observation of a B-mode signal consistent with the spectrum predicted by inflationary models would provide the strongest limit yet on the mass of an elementary particle – a graviton – at a level of m . 10−30 eV≈ (10 Mpc)−1. We also find that a graviton mass in the range between (10 Mpc)−1 and (10 kpc)−1 leads to interesting modifications of the polarization spectrum. The characteristic signature of a graviton mass in this range would be a plateau in the B-mode spectrum up to angular multipoles of l ∼ 100. For even larger values of the graviton mass the tensor contribution to the CMB spectra becomes strongly suppressed.
منابع مشابه
ar X iv : a st ro - p h / 03 08 13 5 v 2 1 7 Se p 20 03 Acceleration parameter of the Universe expansion and cosmological equation of state
We analyze the astronomical data on the explosions of supernovae Ia as well as the precision measurement of cosmic microwave background in order to get a model-independent determination of the acceleration parameter for the Universe evolution. The effective parameter of state in the cosmological equations, which gives the ratio of pressure to the energy density, as shown, can naturally get the ...
متن کاملGraviton mass and total relative density of mass Ω tot in
It is noticed that the total relative density of mass in the Universe Ωtot should exceed 1, i.e. Ωtot = 1 + f 2/6 according to the field relativistic theory of gravity (RTG), which is free of the cosmological singularity and which provides the Euclidean character for the 3-dimensional space. Here f is the ratio of the graviton mass mg to the contemporary value of the “Hubble mass” mH = ~H0/c 2 ...
متن کاملCosmic String Lensing and Closed Time-like Curves
In an analysis of the gravitational lensing by two relativistic cosmic strings, we argue that the formation of closed time-like curves proposed by Gott is unstable in the presence of particles (e.g. the cosmic microwave background radiation). Due to the attractor-like behavior of the closed time-like curve, we argue that this instability is very generic. A single graviton or photon in the vicin...
متن کاملPlanckian Interacting Massive Particles as Dark Matter.
The standard model could be self-consistent up to the Planck scale according to the present measurements of the Higgs boson mass and top quark Yukawa coupling. It is therefore possible that new physics is only coupled to the standard model through Planck suppressed higher dimensional operators. In this case the weakly interacting massive particle miracle is a mirage, and instead minimality as d...
متن کامل