Search for primordial symmetry breakings in CMB
2016 ◽
Vol 31
(21)
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pp. 1640003
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Keyword(s):
There are possibilities to violate symmetries (e.g. parity and rotational invariance) in the primordial cosmological fluctuations. Such symmetry breakings can imprint very rich signatures in late-time phenomena, which may be possible to observe. Especially, Cosmic Microwave Background (CMB) will change its face drastically, corresponding to the symmetry-breaking types, since the harmonic-space representation is very sensitive to the statistical, spin and angular dependences of cosmological perturbations. Here, we discuss (1) general responses of CMB to the symmetry breakings, (2) some theoretical models creating interesting CMB signatures, and (3) aspects of the estimation from observational data.
2002 ◽
Vol 17
(25)
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pp. 3663-3680
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2009 ◽
Vol 24
(05)
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pp. 369-376
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2010 ◽
Vol 2010
(07)
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pp. 003-003
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2007 ◽
Vol 16
(05)
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pp. 1571-1582
1997 ◽
Vol 79
(26)
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pp. 5198-5201
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2012 ◽
Vol 21
(02)
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pp. 1250017
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2011 ◽
Vol 20
(10)
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pp. 2121-2124
Keyword(s):