Probing the Early Universe with the CMB Scalar, Vector and Tensor Bispectrum

• Main Author: Shiraishi, Maresuke. (Author)
• Corporate Author: SpringerLink (Online service)
• Format: Electronic
• Language: English
• Published: Tokyo : Springer Japan : Imprint: Springer, 2013.
• Series: Springer Theses, Recognizing Outstanding Ph.D. Research,
• Subjects: Physics.; Mathematical physics.; Astronomy.; Astronomy, Astrophysics and Cosmology.; Mathematical Methods in Physics.; Mathematical Physics.
• Online Access: https://ezaccess.library.uitm.edu.my/login?url=http://dx.doi.org/10.1007/978-4-431-54180-6

The 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 pert...

Table of Contents:

• Introduction
• 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.