Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Higgs inflation is a simple and elegant model in which early-universe inflation is driven by the Higgs sector of th...

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We propose a model for cosmic inflation which is based on an effective description of strongly interacting, nonsupersymmetric matter within the framework of dynamical Abelian projection and centerization. The underlying gauge symmetry is assumed to be SU (N + 1) with N ≫ 1. Appealing to a thermodynamical treatment, the ground-state structure of the model is classically determined by a potential...

A dissipative mechanism is presented, which emerges in generic interacting quantum field systems and which leads to robust warm inflation. An explicit example is considered, where using typical parameter values, it is shown that considerable radiation can be produced during inflation. The extension of our results to expanding spacetime also is discussed. PACS numbers: 98.80.Cq, 05.70.Ln, 11.10....

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 ...

Upon acute viral infection, a typical cytotoxic T lymphocyte (CTL) response is characterized by a phase of expansion and contraction after which it settles at a relatively stable memory level. Recently, experimental data from mice infected with murine cytomegalovirus (MCMV) showed different and unusual dynamics. After acute infection had resolved, some antigen specific CTL started to expand ove...

Using a nonparametric method to characterize Markovian operators, we describe the evolution of the short-run inflation processes among the EMU countries between 1996 and 2012. While a progressive clustering pattern can be outlined in the first half of the period showing that the monetary union makes price dynamics more homogeneous starting from 2004 an increase in price volatility makes the clu...

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...

This is an excellent paper. It identifies factors explaining episodes of high inflation and inflation stabilization in 5 Latin American countries during the postwar period. A central finding of the paper, on which I will focus most of my discussion, is that the majority of the observed episodes of hyperinflation were driven by escape dynamics in inflation expectations, or inflation expectations...

Attempts by governments to finance a substantial proportion of expenditure by seigniorage can lead to multiple inflationary equilibria. Theoretical models suggest that, in these circumstances, inflation follows a non-linear process with up to three steady states and that the stability characteristics of these depend on the process by which expectations are formed. In this paper we show that the...