Delta N Formalism In Cosmological Perturbation Theory

Abolhasani, Ali Akbar (Sharif Univ Of Technology, Firouzjahi, Hassan (Inst For Research In Fundamental Sciences (Ipm), Naruko, Atsushi (Tohoku Univ, Sasaki, Misao (Kyoto Univ

Abolhasani, Ali Akbar (Sharif Univ Of Technology, Firouzjahi, Hassan (Inst For Research In Fundamental Sciences (Ipm), Naruko, Atsushi (Tohoku Univ, Sasaki, Misao (Kyoto Univ - Delta N Formalism In Cosmological Perturbation Theory
Abolhasani, Ali Akbar (Sharif Univ Of Technology, Firouzjahi, Hassan (Inst For Research In Fundamental Sciences (Ipm), Naruko, Atsushi (Tohoku Univ, Sasaki, Misao (Kyoto Univ - Delta N Formalism In Cosmological Perturbation Theory
Abolhasani, Ali Akbar (Sharif Univ Of Technology, Firouzjahi, Hassan (Inst For Research In Fundamental Sciences (Ipm), Naruko, Atsushi (Tohoku Univ, Sasaki, Misao (Kyoto Univ - Delta N Formalism In Cosmological Perturbation Theory
Abolhasani, Ali Akbar (Sharif Univ Of Technology, Firouzjahi, Hassan (Inst For Research In Fundamental Sciences (Ipm), Naruko, Atsushi (Tohoku Univ, Sasaki, Misao (Kyoto Univ - Delta N Formalism In Cosmological Perturbation Theory

Omschrijving

Early Universe cosmology is an active area of research and cosmic inflation is a pillar of modern cosmology. Among predictions of inflation, observationally the most important one is the generation of cosmological perturbations from quantum vacuum fluctuations that source all inhomogeneous structures in the Universe, not to mention the large-scale structures such as clusters of galaxies. Cosmological perturbation theory is the basic tool to study the perturbations generated from inflation. There are a few different approaches to primordial cosmological perturbations. In the conventional approach one perturbs the field equations and after quantizing the perturbations by the use of the corresponding action, one calculates the power spectrum of cosmological observables. This approach extends to higher order perturbations such as bispectrum etc., but the analysis becomes increasingly difficult. The delta N formalism, the topic of this book, is an alternative approach. The novelty of this approach is that, under the condition that the scale of interest is very large so that the spatial derivatives may be ignored in the dynamics, it can be applied to all orders in perturbation theory and has a rigorous foundation in general relativity. Thanks to the fact that one can evaluate perturbations with only the knowledge of background solutions, it is proved to be much easier than the conventional approach in evaluating higher order effects in many cases.
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Schrijver
Abolhasani, Ali Akbar (Sharif Univ Of Technology, Firouzjahi, Hassan (Inst For Research In Fundamental Sciences (Ipm), Naruko, Atsushi (Tohoku Univ, Sasaki, Misao (Kyoto Univ
Titel
Delta N Formalism In Cosmological Perturbation Theory
Uitgever
World Scientific Publishing Co Pte Ltd
Jaar
2019
Taal
Engels
Pagina's
182
Gewicht
272 gr
EAN
9789813238756
Afmetingen
235 x 159 x 19 mm
Bindwijze
Hardback

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