In brane inflationary scenarios, the cosmological perturbations are supposed to originate from the vacuum fluctuations of the inflaton field corresponding to the position of the brane. We show that a significant, and possibly dominant, contribution to the curvature perturbation is generated at the end of inflation through the vacuum fluctuations of fields, other than the inflaton, which are lig...

The linkages between inflation and the economy’s cyclical position are thought to be strongly affected by the credibility of monetary authorities. The author complements existing research by estimating a small forward-looking model of the U.S. economy with endogenous central bank credibility. His work differs from the existing literature in several ways. First, he endogenizes and estimates cred...

A large body of literatures links financial development to economic growth, yet the channels through which inflation and economic development affect this relationship have been less thoroughly explored. This research takes econometric and trilateral graphic approaches to examine these channels using 99 developing and developed countries during the years 1960-2009. Findings prove that respecti...

in literature about inflation targeting, main factor is interest rate. in new surveys, price of some assets as housing is important in inflation targeting. iran inflation targeting is based on money changes and is not based on interest rate and housing price. in this paper, we want to survey problems of wrong policy of iran policy makers. we reveal that, using rate of deposit profit and growth ...

N recent years, many countries have experienced “stagflation,” a period of high and rising inflation and unemployment. Over this time, higher inflation increasingly has come to be blamed for higher unemployment and reduced growth of real output. This contrasts sharply with previously held notions that there was either a long-run tradeoff between inflation and unemployment or a “natural rate of ...

We investigate the range of inflationary universe models driven by scalar fields possessing a general interaction potential of the form V (φ) = V0φ n exp(−λφm). Power-law, de Sitter and intermediate inflationary universes emerge as special cases together with several new varieties of inflation. Analysing the behaviour of these models at the extrema of φ we derive sufficient constraints on the m...

The paper provides an analysis of the inflation problem caused by COVID-19 pandemic and continued Russia’s war against Ukraine, through different channels, including global supply chain disruption, increased governmental spending, decreased goods and, etc. Inflation, which in this case was supply-side driven inflation, serious debates terms how to tackle challenge. Should central banks use thei...