Beta-function formalism for k-essence constant-roll inflation

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Fast-Roll Inflation

We show that in the simplest theories of spontaneous symmetry breaking one can have a stage of a fast-roll inflation. In this regime the standard slow-roll condition |m2| ≪ H is violated. Nevertheless, this stage can be rather long if |m| is sufficiently small. Fast-roll inflation can be useful for generating proper initial conditions for the subsequent stage of slow-roll inflation in the very ...

متن کامل

Generalized slow-roll inflation

The slow-roll approximation to inflation is ultimately justified by the presence of inflationary attractors for the orbits of the solutions of the dynamical equations in phase space. There are many indications that the inflaton field couples nonminimally to the spacetime curvature: the existence of attractor points for inflation with nonminimal coupling is demonstrated, subject to a condition o...

متن کامل

Inflation without slow roll

We draw attention to the possibility that inflation (i.e. accelerated expansion) might continue after the end of slow roll, during a period of fast oscillations of the inflaton field φ. This phenomenon takes place when a mild non-convexity inequality is satisfied by the potential V (φ). The presence of such a period of φ-oscillation-driven inflation can substantially modify reheating scenarios....

متن کامل

Non-constant Hazard Function and Inflation Dynamics

This paper explores implications of nominal rigidity characterized by a non-constant hazard function for aggregate dynamics. I derive the NKPC under an arbitrary hazard function and parameterize it with the Weibull duration model. The resulting Phillips curve involves lagged in‡ation and lagged expectations. It nests the Calvo NKPC as a limiting case in the sense that the e¤ects of both terms a...

متن کامل

On a $k$-extension of the Nielsen's $beta$-Function

Motivated by the $k$-digamma function, we introduce a $k$-extension of the Nielsen's $beta$-function, and further study some properties and inequalities of the new function.

متن کامل

ذخیره 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: Physics of the Dark Universe

سال: 2020

ISSN: 2212-6864

DOI: 10.1016/j.dark.2020.100505