A
Ali Nayeri
Researcher at Harvard University
Publications - 10
Citations - 988
Ali Nayeri is an academic researcher from Harvard University. The author has contributed to research in topics: String (physics) & Cosmology. The author has an hindex of 6, co-authored 10 publications receiving 944 citations. Previous affiliations of Ali Nayeri include Massachusetts Institute of Technology.
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Journal ArticleDOI
Producing a scale-invariant spectrum of perturbations in a Hagedorn phase of string cosmology.
TL;DR: In this cosmological scenario, the early Hagedorn phase of string gas cosmology goes over smoothly into the radiation-dominated phase of standard cosmology, without having a period ofcosmological inflation.
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Tensor Modes from a Primordial Hagedorn Phase of String Cosmology
TL;DR: In this article, the spectrum of tensor metric fluctuations (gravitational waves) in the Hagedorn phase of string gas cosmology is computed and shown to be nearly scale invariant.
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String Gas Cosmology and Structure Formation
TL;DR: In this paper, it has been shown that a Hagedorn phase of string gas cosmology may provide a causal mechanism for generating a nearly scale-invariant spectrum of scalar metric fluctuations, without the need for an intervening period of de Sitter expansion.
Journal ArticleDOI
String Gas Cosmology and Structure Formation
TL;DR: In this paper, it has been shown that a Hagedorn phase of string gas cosmology may provide a causal mechanism for generating a nearly scale-invariant spectrum of scalar metric fluctuations, without the need for an intervening period of de Sitter expansion.
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More on the spectrum of perturbations in string gas cosmology
Robert Brandenberger,Sugumi Kanno,Jiro Soda,Damien A. Easson,Justin Khoury,Patrick Martineau,Ali Nayeri,Subodh P. Patil +7 more
TL;DR: In this article, the authors rewrite string gas cosmology in the Einstein frame and show that fixing the dilaton at some early stage is important for obtaining a scale-invariant spectrum of cosmological fluctuations.