Flattening the inflaton's potential with quantum corrections
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In this paper, it was shown that a classical scalar potential with V″ V ∼ 1 can be sufficiently flattened by quantum corrections to give rise to slow roll inflation, which is the simplest way to generate an inflationary potential without fine-tuning.About:
This article is published in Physics Letters B.The article was published on 1997-01-09 and is currently open access. It has received 125 citations till now. The article focuses on the topics: Inflaton & Slow roll.read more
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Particle physics models of inflation and the cosmological density perturbation
David H. Lyth,Antonio Riotto +1 more
TL;DR: A review of particle-theory models of inflation, and their predictions for the primordial density perturbation that is thought to be the origin of structure in the Universe is given in this paper.
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Primordial Black Holes - Perspectives in Gravitational Wave Astronomy -
Misao Sasaki,Teruaki Suyama,Takahiro Tanaka,Takahiro Tanaka,Shuichiro Yokoyama,Shuichiro Yokoyama +5 more
TL;DR: In this paper, a review of the current understanding of primordial black holes (PBHs), with particular focus on those massive examples ( ) which remain at the present epoch, not having evaporated through Hawking radiation, is presented.
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Halo Substructure and the Power Spectrum
TL;DR: In this paper, a semianalytic model was proposed to investigate the merger history, destruction rate, and survival probability of substructure in hierarchically formed dark matter halos and use it to study the substructure content of halos as a function of input primordial power spectrum.
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Hilltop Inflation
Lotfi Boubekeur,David H. Lyth +1 more
TL;DR: In this paper, the authors study hilltop inflation, in which inflation takes place near a maximum of the potential, and show that hill-top inflation is more generic than seems to have been previously recognized, adding to the credibility of the idea that eternal inflation provides the preinflationary initial condition.
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Primordial black holes as a dark matter candidate
TL;DR: The detection of gravitational waves from mergers of tens of Solar mass black hole binaries has led to a surge in interest in primordial black holes (PBHs) as a dark matter candidate as discussed by the authors.
References
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Book
The Early Universe
Edward W. Kolb,Michael S. Turner +1 more
TL;DR: In this article, the Robertson-Walker Metric is used to measure the radius of the Planck Epoch in the expanding universe, which is a measure of the number of atoms in the universe.
Book
Particle Physics and Inflationary Cosmology
TL;DR: A monograph on inflationary cosmology and cosmological phase transitions is presented in this paper, which investigates modern cosmology's relationship to elementary particle physics and includes a non-technical discussion of the theory for those unfamiliar with the theory.
Journal ArticleDOI
Natural inflation with pseudo Nambu-Goldstone bosons
TL;DR: It is shown that a pseudo-Nambu-Goldstone boson, with a potential of the form V(d) = A’[1 f cos(+/f)], can naturally give rise to an epoch of infiation in the early universe.
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False vacuum inflation with Einstein gravity
TL;DR: Investigation of chaotic inflation models with two scalar fields, such that one field (the inflaton) rolls while the other is trapped in a false vacuum state, finds that false vacuum inflation occurs with the inflaton field far below the Planck scale, making it easier to implement in the context of supergravity than standard chaotic inflation.
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Axions in inflationary cosmology
TL;DR: In this paper, the problem of the cosmological constraints on the axion mass is re-examined and it is argued that in the context of inflationary cosmology the constraint m a ≳10 −5 eV can be avoided even when the axions perturbations produced during inflation are taken into account.