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  • © 2018

The Vector Mode in the Second-order Cosmological Perturbation Theory

Authors:

  • Nominated as an outstanding PhD thesis by the Nagoya University, Japan
  • Skillfully describes the development of the complete formalism for the second-order cosmological perturbation theory, involving vector and tensor modes
  • Proposes a scenario of magnetic field generation in the second-order perturbation theory
  • Quantifies the weak lensing signals from the second-order vector and tensor modes to provide forecasts for future experiments

Part of the book series: Springer Theses (Springer Theses)

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Table of contents (6 chapters)

  1. Front Matter

    Pages i-xiii
  2. Introduction

    • Shohei Saga
    Pages 1-13
  3. Generation of Magnetic Fields

    • Shohei Saga
    Pages 53-73
  4. Weak Lensing

    • Shohei Saga
    Pages 75-106
  5. 21 cm Lensing in the Dark Ages

    • Shohei Saga
    Pages 107-128
  6. Summary of This Thesis

    • Shohei Saga
    Pages 129-131
  7. Back Matter

    Pages 133-136

About this book

This thesis sheds valuable new light on the second-order cosmological perturbation theory, extensively discussing it in the context of cosmic microwave background (CMB) fluctuations. It explores the observational consequences of the second-order vector mode, and addresses magnetic field generation and the weak lensing signatures, which are key phenomena of the vector mode.

The author demonstrates that the second-order vector mode, which never appears at the linear-order level, naturally arises from the non-linear coupling of the first-order scalar modes. This leads to the remarkable statement that the vector-order mode clearly contributes to the generation of cosmological magnetic fields. Moreover, the weak lensing observations are shown to be accessible to the vector mode. On the basis of ongoing and forthcoming observations, the thesis concludes that the second-order vector mode is detectable.

Authors and Affiliations

  • Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan

    Shohei Saga

About the author

Dr. Shohei Saga is a JSPS research Fellow at Yukawa Institute for Theoretical Physics, Kyoto University. His work mainly involves observational cosmology. He received his Bachelor of Science from Nagoya University in 2012, and his Master and Doctor of Science from the Department of Physics, Nagoya University in 2014 and 2017, respectively.  In March 2014, he was awarded the 2013 Dean Prize by the Department of Physics, Nagoya University.

Bibliographic Information

Buy it now

Buying options

eBook USD 84.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book USD 109.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book USD 109.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Other ways to access