000 03479nam a22005417a 4500
001 sulb-eb0025914
003 BD-SySUS
005 20160413122554.0
007 cr nn 008mamaa
008 130710s2013 ja | s |||| 0|eng d
020 _a9784431541806
_9978-4-431-54180-6
024 7 _a10.1007/978-4-431-54180-6
_2doi
050 4 _aQB1-991
050 4 _aQB460-466
050 4 _aQB980-991
072 7 _aPGC
_2bicssc
072 7 _aSCI004000
_2bisacsh
072 7 _aSCI005000
_2bisacsh
082 0 4 _a520
_223
100 1 _aShiraishi, Maresuke.
_eauthor.
245 1 0 _aProbing the Early Universe with the CMB Scalar, Vector and Tensor Bispectrum
_h[electronic resource] /
_cby Maresuke Shiraishi.
264 1 _aTokyo :
_bSpringer Japan :
_bImprint: Springer,
_c2013.
300 _aXIII, 180 p.
_bonline resource.
336 _atext
_btxt
_2rdacontent
337 _acomputer
_bc
_2rdamedia
338 _aonline resource
_bcr
_2rdacarrier
347 _atext file
_bPDF
_2rda
490 1 _aSpringer Theses, Recognizing Outstanding Ph.D. Research,
_x2190-5053
505 0 _aIntroduction -- Fluctuations in the inflation -- Fluctuations in cosmic microwave background radiation -- Primordial non-Gaussianities -- General formalism for the CMB bispectrum from primordial scalar, vector and tensor non-Gaussianities -- CMB bispectrum Induced by the two scalars and a graviton correlator -- Violation of the rotational invariance in the CMB bispectrum -- Parity violation of gravitons in the CMB bispectrum -- CMB bispectrum generated from primordial magnetic fields -- Conclusion.
520 _aThe non-Gaussianity in the primordial density fluctuations is a key feature to clarify the early Universe and it has been probed with the Cosmic Microwave Background (CMB) bispectrum. In recent years, we have treated the novel-type CMB bispectra, which originate from the vector- and tensor-mode perturbations and include the violation of the rotational or parity invariance. On the basis of our current works, this thesis provides the general formalism for the CMB bispectrum sourced by the non-Gaussianity in the scalar, vector and tensor-mode perturbations. Applying this formalism, we calculate the CMB bispectra from the two scalars and a graviton correlation and primordial magnetic fields, and then outline new constraints on these magnitudes. Furthermore, this formalism can be easily extended to the cases where the rotational or parity invariance is broken. We also compute the CMB bispectra from the scalar-mode non-Gaussianities with a preferred direction and the tensor-mode non-Gaussianities induced by the parity-violating Weyl cubic terms. Here, we show that these bispectra include unique signals, which any symmetry-invariant models can never produce.
650 0 _aPhysics.
650 0 _aMathematical physics.
650 0 _aAstronomy.
650 0 _aAstrophysics.
650 0 _aCosmology.
650 1 4 _aPhysics.
650 2 4 _aAstronomy, Astrophysics and Cosmology.
650 2 4 _aMathematical Methods in Physics.
650 2 4 _aMathematical Physics.
710 2 _aSpringerLink (Online service)
773 0 _tSpringer eBooks
776 0 8 _iPrinted edition:
_z9784431541790
830 0 _aSpringer Theses, Recognizing Outstanding Ph.D. Research,
_x2190-5053
856 4 0 _uhttp://dx.doi.org/10.1007/978-4-431-54180-6
912 _aZDB-2-PHA
942 _2Dewey Decimal Classification
_ceBooks
999 _c48006
_d48006