Causality, randomness, and the microwave background.
نویسندگان
چکیده
Fluctuations in the cosmic microwave background (CMB) temperature are being studied with ever increasing precision. Two competing types of theories might describe the origins of these fluctuations: “inflation” and “defects”. Here we show how the differences between these two scenarios can give rise to striking signatures in the microwave fluctuations on small scales, assuming a standard recombination history. These should enable high resolution measurements of CMB anisotropies to distinguish between these two broad classes of theories, independent of the precise details of each. PACS Numbers : 98.80.Cq, 95.35+d Typeset using REVTEX
منابع مشابه
Causality and Statistics on the Groenewold - Moyal Plane
Quantum theories constructed on the noncommutative spacetime called the Groenewold-Moyal plane exhibit many interesting properties such as Lorentz and CPT noninvariance, causality violation and twisted statistics. We show that such violations lead to many striking features that may be tested experimentally. These theories predict Pauli forbidden transitions due to twisted statistics, anisotropi...
متن کاملar X iv : 0 81 0 . 32 89 v 1 [ as tr o - ph ] 1 8 O ct 2 00 8 Kolmogorov stochasticity parameter measuring the randomness in Cosmic Microwave Background
The Kolmogorov stochasticity parameter (KSP) is applied to quantify the degree of randomness (stochasticity) in the temperature maps of the Cosmic Microwave Background radiation maps. It is shown that, the KSP for the WMAP5 maps is about twice higher than that of the simulated maps for the concordance ΛCDM cosmological model, implying the existence of a randomizing effect not taken into account...
متن کاملKolmogorov stochasticity parameter measuring the randomness in the cosmic microwave background
The Kolmogorov stochasticity parameter (KSP) is applied to quantify the degree of randomness (stochasticity) in the temperature maps of the Cosmic Microwave Background radiation maps. It is shown that the KSP for the WMAP5 maps is about twice as high as that of the simulated maps for the concordance ΛCDM cosmological model, implying that a randomizing effect exists that has not been taken into ...
متن کاملDeparture from Gaussianity of the Cosmic Microwave Background Temperature Anisotropies in the Three-year Wmap Data
We test the hypothesis that the temperature of the cosmicmicrowave background is consistent with a Gaussian random field defined on the celestial sphere, using the full sky debiased internal linear combination (DILC) map produced from the three-yearWMAP data. We test the phases for spherical harmonic modes with ‘ 10 (which should be the cleanest) for uniformity, randomness, and correlation with...
متن کاملTesting the Gaussian Random Hypothesis with the Cosmic Microwave Background Temperature Anisotropies in the 3-year Wmap Data
We test the hypothesis that the temperature of the cosmic microwave background is consistent with a Gaussian random field defined on the celestial sphere, using de-biased internal linear combination (DILC) map produced from the 3-year WMAP data. We test the phases for spherical harmonic modes with l ≤ 10 (which should be the cleanest) for their uniformity, randomness, and correlation with those...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Physical review letters
دوره 76 9 شماره
صفحات -
تاریخ انتشار 1996