Dark spinor inflation: Theory primer and dynamics
نویسندگان
چکیده
منابع مشابه
Dark spinor inflation – theory primer and dynamics
Inflation driven by a single dark spinor field is discussed. We define the notion of a dark spinor field and derive the cosmological field equations for such a matter source. The conditions for inflation are determined and an exactly solvable model is presented. We find the power spectrum of the quantum fluctuation of this field and compare the results with scalar field inflation. PACS numbers:...
متن کاملInflation Dynamics and Inflation Regimes
In this paper we develop and estimate a new-Keynesian model of inflation and use it to investigate the hypothesis that prices in the UK are re-set more frequently during periods of high inflation. In the model, firms are assumed to condition their expectations on an optimally-selected but incomplete information set and we further assume that the probability that they will reset their price in a...
متن کاملA Cosmological Model with Dark Spinor Source
In this paper, we discuss the system of massive nonlinear dark spinors coupling with the Friedman-Robertson-Walker(FRW) metric in detail, where the thermodynamic movement of spinors is also taken into account. The results reveal that, the nonlinear potential of the spinor field can provide a little negative pressure, which resists the universe to become singular. The model is oscillating in tim...
متن کاملFive-Brane Dynamics and Inflation in Heterotic M-Theory
Generic heterotic M-theory compactifications contain five-branes wrapping nonisolated genus zero or higher genus curves in a Calabi-Yau threefold. Non-perturbative superpotentials do not depend on moduli of such five-branes. We show that fluxes and non-perturbative effects can stabilize them in a non-supersymmetric AdS vacuum. We also show that these five-branes can be stabilized in a dS vacuum...
متن کاملInflation, dark matter, and dark energy in the string landscape.
We consider the conditions needed to unify the description of dark matter, dark energy, and inflation in the context of the string landscape. We find that incomplete decay of the inflaton field gives the possibility that a single field is responsible for all three phenomena. By contrast, unifying dark matter and dark energy into a single field, separate from the inflaton, appears rather difficult.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2008
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.77.123535