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We review locked inflation and we critically address phenomenological and consistency issues thathave appeared in the literature. A natural window of opportunity is found for the original scenario.Moreover, a simple way to enlarge the…

广义相对论与量子宇宙学 · 物理学 2020-01-30 Michael Zantedeschi

The hypothesis that the Universe underwent a period of exponential expansion at very early times has become the most popular theory of the early Universe. Not only does it solve some of the problems of standard big bang cosmology, but it…

天体物理学 · 物理学 2007-05-23 Robert H. Brandenberger

One way to judge the impact of the inflation concept is to consider where cosmology might be today without it. The Einstein-de Sitter model would not have been so keenly defended, and there might have been more interest in negative space…

天体物理学 · 物理学 2007-05-23 P. J. E. Peebles

A theoretical self-sustainable economic model is established based on the fundamental factors of production, consumption, reservation and reinvestment, where currency is set as a unconditional credit symbol serving as transaction equivalent…

综合经济学 · 经济学 2018-07-23 Ran Huang

It has become standard practice to take the logarithmic growth of the scale factor as a measure of the amount of inflation, despite the well-known fact that this is only an approximation for the true amount of inflation required to solve…

宇宙学与河外天体物理 · 物理学 2016-09-02 Sirichai Chongchitnan

This review is about the convenience, the benefits, as well as the destructive capacities of money. It deals with various aspects of money creation, with its value, and its appropriation. All sorts of money tend to get corrupted by…

综合金融 · 定量金融 2011-02-17 Karl Svozil

The aim of this paper is to show, that the 'oscillating universe' is a viable alternative to inflation. We remind that this model provides a natural solution to the flatness or entropy and to the horizon problem of standard cosmology. We…

广义相对论与量子宇宙学 · 物理学 2016-08-31 Ruth Durrer , Joachim Laukenmann

Recent developments in cosmology suggest that much of the universe is in a state of explosive, accelerated expansion, called inflation. We live in a "bubble" where inflation has ended, and other bubbles with diverse properties are…

高能物理 - 理论 · 物理学 2011-08-26 Alexander Vilenkin

Recently, it was proposed that a small true vacuum universe can inflate spontaneously, in principle. Furthermore, there should be matter creation in vacuum inflation due to quantum fluctuations, and the matter created will influence the…

广义相对论与量子宇宙学 · 物理学 2017-05-01 Zhiqiang Huang , Dongfeng Gao , Qing-yu Cai

We review the theory of inflation with single and multiple fields paying particular attention to the dynamics of adiabatic and entropy/isocurvature perturbations which provide the primary means of testing inflationary models. We review the…

天体物理学 · 物理学 2008-11-26 Bruce A. Bassett , Shinji Tsujikawa , David Wands

Power-law inflation has stood as a classical model in inflationary cosmology since the early 1980s, prized for its exact analytical solutions and ability to naturally resolve the Big Bang theory's horizon and flatness problems through…

宇宙学与河外天体物理 · 物理学 2026-03-12 Yao Yu , Wen-Zhang Feng , Hong-Song Xie , Han Zhang , Bai-Cian Ke

Motivated by the current fears of a potentially stagflationary global economic environment, this paper uses new and recently introduced mathematical techniques to study multivariate time series pertaining to country inflation (CPI),…

统计金融 · 定量金融 2022-09-22 Nick James , Max Menzies , Kevin Chin

A unified approach to quintessence and inflation is investigated with the use of a single scalar field. It is argued that successful potentials have to approximate a combination of exponential and inverse power-law decline in the limit of…

天体物理学 · 物理学 2007-05-23 Konstantinos Dimopoulos

Trapped inflation is a mechanism in which particle production from the moving inflaton is the main source of friction in the inflaton equation of motion. The produced fields source inflaton perturbations, which dominate over the vacuum…

宇宙学与河外天体物理 · 物理学 2016-12-09 Lauren Pearce , Marco Peloso , Lorenzo Sorbo

Inflation is nowadays a well-established paradigm consistent with all the observations. The precise nature of the inflaton is however unknown and its role could be played by any candidate able to imitate a scalar condensate in the slow-roll…

高能物理 - 唯象学 · 物理学 2015-09-02 Javier Rubio

We study inflation in a random multifield potential, using techniques developed by Marsh et al. The potential is a function of a large number of fields, and we choose parameters so that inflation only occurs in regions where the potential…

高能物理 - 理论 · 物理学 2016-08-02 Ben Freivogel , Roberto Gobbetti , Enrico Pajer , I-Sheng Yang

The notion that an independent central bank reduces a country's inflation is a controversial hypothesis. To date, it has not been possible to satisfactorily answer this question because the complex macroeconomic structure that gives rise to…

计量经济学 · 经济学 2021-05-17 Philipp F. M. Baumann , Michael Schomaker , Enzo Rossi

Inflationary models, especially those with plateau-type potentials, are consistent with the cosmological data, but inflation itself does not resolve the initial singularity. This singularity is resolved, for example, by the idea of the…

广义相对论与量子宇宙学 · 物理学 2024-05-16 Hiroki Matsui , Alexandros Papageorgiou , Fuminobu Takahashi , Takahiro Terada

Informed by a quantum information perspective, we interpret cosmological expansion of space as growing entanglement between underlying degrees of freedom. In particular, we focus on inflationary cosmology, which, while being a successful…

综合物理 · 物理学 2021-09-10 Ashmeet Singh , Olivier Doré

The cosmic inflation hypothesis, its relation to fundamental theory on the beginning of the universe, and the light that both shed on how the various elements and their relative amounts came into existence. The fundamental factors…

综合物理 · 物理学 2011-12-05 Roger Ellman