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- W3100396934 endingPage "040" @default.
- W3100396934 startingPage "040" @default.
- W3100396934 abstract "We investigate a framework aiming to provide a common origin for the large-angle anomalies detected in the Cosmic Microwave Background (CMB), which are hypothesized as the result of the statistical inhomogeneity developed by different isocurvature fields of mass $msim H$ present during inflation. The inhomogeneity arises as the combined effect of $(i)$ the initial conditions for isocurvature fields (obtained after a fast-roll stage finishing many $e$-foldings before cosmological scales exit the horizon), $(ii)$ their inflationary fluctuations and $(iii)$ their coupling to other degrees of freedom. Our case of interest is when these fields (interpreted as the precursors of large-angle anomalies) leave an observable imprint only in isolated patches of the Universe. When the latter intersect the last scattering surface, such imprints arise in the CMB. Nevertheless, due to their statistically inhomogeneous nature, these imprints are difficult to detect, for they become hidden in the background similarly to the Cold Spot. We then compute the probability that a single isocurvature field becomes inhomogeneous at the end of inflation and find that, if the appropriate conditions are given (which depend exclusively on the preexisting fast-roll stage), this probability is at the percent level. Finally, we discuss several mechanisms (including the curvaton and the inhomogeneous reheating) to investigate whether an initial statistically inhomogeneous isocurvature field fluctuation might give rise to some of the observed anomalies. In particular, we focus on the Cold Spot, the power deficit at low multipoles and the breaking of statistical isotropy." @default.
- W3100396934 created "2020-11-23" @default.
- W3100396934 creator A5006138061 @default.
- W3100396934 creator A5011788575 @default.
- W3100396934 date "2016-09-22" @default.
- W3100396934 modified "2023-09-27" @default.
- W3100396934 title "Hidden in the background: a local approach to CMB anomalies" @default.
- W3100396934 cites W1461794734 @default.
- W3100396934 cites W1486348366 @default.
- W3100396934 cites W1542658772 @default.
- W3100396934 cites W1593303744 @default.
- W3100396934 cites W1712358082 @default.
- W3100396934 cites W1759558465 @default.
- W3100396934 cites W1791287179 @default.
- W3100396934 cites W1893037425 @default.
- W3100396934 cites W1923931754 @default.
- W3100396934 cites W1964777539 @default.
- W3100396934 cites W1968070217 @default.
- W3100396934 cites W1970126139 @default.
- W3100396934 cites W1971631076 @default.
- W3100396934 cites W1974686869 @default.
- W3100396934 cites W1976584887 @default.
- W3100396934 cites W1976942507 @default.
- W3100396934 cites W1978364516 @default.
- W3100396934 cites W1978556707 @default.
- W3100396934 cites W1979147028 @default.
- W3100396934 cites W1983957937 @default.
- W3100396934 cites W1992137638 @default.
- W3100396934 cites W1998031879 @default.
- W3100396934 cites W2004013853 @default.
- W3100396934 cites W2006310943 @default.
- W3100396934 cites W2007443706 @default.
- W3100396934 cites W2008151583 @default.
- W3100396934 cites W2008764639 @default.
- W3100396934 cites W2009441000 @default.
- W3100396934 cites W2011365476 @default.
- W3100396934 cites W2012580654 @default.
- W3100396934 cites W2013101909 @default.
- W3100396934 cites W2013562232 @default.
- W3100396934 cites W2014248911 @default.
- W3100396934 cites W2016346111 @default.
- W3100396934 cites W2017634382 @default.
- W3100396934 cites W2024242779 @default.
- W3100396934 cites W2026229313 @default.
- W3100396934 cites W2027229531 @default.
- W3100396934 cites W2028230244 @default.
- W3100396934 cites W2030989637 @default.
- W3100396934 cites W2031955859 @default.
- W3100396934 cites W2036993320 @default.
- W3100396934 cites W2037232212 @default.
- W3100396934 cites W2043379579 @default.
- W3100396934 cites W2044743321 @default.
- W3100396934 cites W2045210744 @default.
- W3100396934 cites W2046126750 @default.
- W3100396934 cites W2050333956 @default.
- W3100396934 cites W2051694884 @default.
- W3100396934 cites W2052563936 @default.
- W3100396934 cites W2052751566 @default.
- W3100396934 cites W2055873668 @default.
- W3100396934 cites W2059281745 @default.
- W3100396934 cites W2060296675 @default.
- W3100396934 cites W2064395571 @default.
- W3100396934 cites W2068677244 @default.
- W3100396934 cites W2071198520 @default.
- W3100396934 cites W2075803525 @default.
- W3100396934 cites W2075884494 @default.
- W3100396934 cites W2077156351 @default.
- W3100396934 cites W2077314885 @default.
- W3100396934 cites W2078857686 @default.
- W3100396934 cites W2082286321 @default.
- W3100396934 cites W2086857952 @default.
- W3100396934 cites W2087750547 @default.
- W3100396934 cites W2090433996 @default.
- W3100396934 cites W2090907651 @default.
- W3100396934 cites W2095397945 @default.
- W3100396934 cites W2099343674 @default.
- W3100396934 cites W2101651757 @default.
- W3100396934 cites W2104884586 @default.
- W3100396934 cites W2105061727 @default.
- W3100396934 cites W2107812920 @default.
- W3100396934 cites W2109709080 @default.
- W3100396934 cites W2112197499 @default.
- W3100396934 cites W2115415590 @default.
- W3100396934 cites W2118265220 @default.
- W3100396934 cites W2119161761 @default.
- W3100396934 cites W2119263399 @default.
- W3100396934 cites W2129373059 @default.
- W3100396934 cites W2130830459 @default.
- W3100396934 cites W2132445008 @default.
- W3100396934 cites W2136773624 @default.
- W3100396934 cites W2138401354 @default.
- W3100396934 cites W2138681135 @default.
- W3100396934 cites W2144973459 @default.
- W3100396934 cites W2145197958 @default.
- W3100396934 cites W2147168878 @default.
- W3100396934 cites W2147875900 @default.
- W3100396934 cites W2150284227 @default.
- W3100396934 cites W2154169098 @default.