Results 1 to 10 of about 1,132,219 (347)

Current Status of Warm Inflation [PDF]

arXiv, 2018
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]

Phys.Rev. D64 (2001) 063502, 2001
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, A. Balbi, A. D. Linde, A. D. Linde, A. D. Linde, A. D. Linde, A. E. Lange, A. S. Goncharov, A. S. Goncharov, A. Vilenkin, C. L. Bennett, C. M. Baugh, C. Panagiotakopoulos, D. H. Lyth, D. Langlois, D. Langlois, D. Polarski, D. Polarski, D. Polarski, E. Gaztañaga, G. Lazarides, G. Lazarides, G. Lazarides, H. Murayama, H. P. Nilles, J. A. Adams, J. A. Adams, J. Ellis, J. Lesgourgues, J. Lesgourgues, J. Lesgourgues, J. Lesgourgues, J. Peacock, J. Silk, J. Yokoyama, J. Yokoyama, K. I. Izawa, L. A. Kofman, M. Kawasaki, M. Kawasaki, M. Kawasaki, M. Kawasaki, M. Kawasaki, M. Yamaguchi, M. Yu. Khlopov, Masahide Yamaguchi, N. Tetradis, P. de Bernardis, P. Peter, R. Kates, S. Gottlöber, S. Hanany, T. Kanazawa, T. Kanazawa   +53 more
arxiv   +5 more sources

Quadratic Chaotic Inflation from Higgs Inflation [PDF]

arXiv, 2014
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]

Phys.Rev. D62 (2000) 087302, 2000
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]

International Journal of Economics and Financial Issues, 2012
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, Saud Ahmed Khan, Azad Haider, Farzana Shaheen   +3 more
doaj   +8 more sources

Forward-looking component in consumers’expectations and inflation forecast targeting: the case of six European economies [PDF]

Zbornik radova Ekonomskog fakulteta u Rijeci : časopis za ekonomsku teoriju i praksu, 2019
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]

JCAP 09 (2021) 026, 2021
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

A Markov-Switching Model of Inflation in Bolivia

Economies, 2021
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

Favored Inflationary Models by Scalar Field Condensate Baryogenesis

Galaxies, 2021
We calculate the baryon asymmetry value generated in the Scalar Field Condensate (SCF) baryogenesis model obtained in several inflationary scenarios and different reheating models.
Daniela Kirilova, Mariana Panayotova
doaj   +1 more source

Information overflow between monetary policy transparency and inflation expectations using multivariate stochastic volatility models

Applied Mathematics in Science and Engineering, 2023
The forward-looking policy is useful for joint decision-making between public and monetary authorities. The study calculates the monetary policy transparency index, inflation expectations, and their volatility spillover effects at a data-driven angle ...
Qizhi He, Mati ur Rahman, Cuihua Xie
doaj   +1 more source