Results 1 to 10 of about 1,331,514 (296)
Current Status of Warm Inflation [PDF]
Warm inflation is an inflationary scenario in which a thermal bath coexists with the inflaton during inflation. This is unlike standard cold inflation in which the Universe is effectively devoid of particles during inflation. The thermal bath in warm inflation is maintained by the dissipation of the inflaton's energy through its couplings to other ...
Rangarajan, Raghavan
arxiv +3 more sources
Natural Double Inflation in Supergravity [PDF]
We propose a natural double inflation model in supergravity. In this model, chaotic inflation first takes place by virtue of the Nambu-Goldstone-like shift symmetry, which guarantees the absence of the exponential factor in the potential for the inflaton field.
A. A. Starobinsky+53 more
arxiv +5 more sources
Quadratic Chaotic Inflation from Higgs Inflation [PDF]
Stimulated with the recent discovery of B-mode by BICEP2, we discuss the relation between a Higgs inflation and a chaotic inflation with quadratic potential. Starting with a generalized Higgs inflation model, we derive a condition for obtaining the quadratic chaotic inflation.
Oda, Ichiro, Tomoyose, Takahiko
arxiv +4 more sources
Remark on approximation in the calculation of the primordial spectrum generated during inflation [PDF]
We re-examine approximations in the analytical calculation of the primordial spectrum of cosmological perturbation produced during inflation. Taking two inflation models (chaotic inflation and natural inflation) as examples, we numerically verify the accuracy of these approximations.
Huang, D. H., Lin, W. B., Zhang, X. M.
arxiv +4 more sources
Inflation and Inflation Uncertainty Nexus: Empirical Evidence from Pakistan [PDF]
This study examines relationship between Inflation and Inflation uncertainty for Pakistan using monthly data over 1957:1-2007:12. ARMA-GARCH model is applied to estimate conditional volatility of inflation.
Sajid Amin Javed+3 more
doaj +7 more sources
What Caused the US Pandemic-Era Inflation?
We estimate a simple dynamic model of prices, wages, and short-run and long-run inflation expectations that allows us to analyze and quantify the sources of recent U.S. inflation.
Olivier J. Blanchard, Ben S. Bernanke
semanticscholar +1 more source
Forward-looking component in consumers’expectations and inflation forecast targeting: the case of six European economies [PDF]
Since there are different ways of revealing central banks’ intentions, a simple research question, which we address in this study, arises. Is the forward-looking (FL) component of consumers’ expectations related to the way in which the forecast is ...
Magdalena Szyszko , Aleksandra Rutkowska
doaj +1 more source
Anisotropic Hyperbolic Inflation [PDF]
Hyperbolic inflation is an extension of the slow-roll inflation in multi-field models. We extend hyperbolic inflation by adding a gauge field and find four-type attractor solutions: slow-roll inflation, hyperbolic inflation, anisotropic slow roll inflation, and anisotropic hyperbolic inflation.
arxiv +1 more source
Can Food Inflation Be Stabilized By Monetary Policy? A Quantile Regression Approach
Theoretically, a consistent and well-defined monetary policy can stabilize food inflation. However, empirical findings have reported both positive and negative effects of monetary policy measures on food inflation.
Choudary Ihtasham Ali+5 more
semanticscholar +1 more source
A Markov-Switching Model of Inflation in Bolivia
The Bolivian inflation process is analyzed utilizing a time-varying univariate and multivariate Markov-switching model (TMS). With monthly data and, beginning in the late 1930s, inflation is accurately described by a univariate TMS. The intercept for the
Antonio N. Bojanic
doaj +1 more source