DILATON COUPLED QUINTESSENCE MODEL IN THE ω - ω′ PLANE

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

ar X iv : h ep - t h / 06 10 01 8 v 1 1 O ct 2 00 6 Dilaton Coupled Quintessence Model in the ω − ω ′ Plane

In this paper, we regard dilaton in Weyl-scaled induced gravitational theory as a coupled quintessence. Based on this consideration, we investigate the dilaton coupled quintessence(DCQ) model in ω− ω plane, which is defined by the equation of state parameter for the dark energy and its derivative with respect to N(the logarithm of the scale factor a). We find the scalar field equation of motion...

متن کامل

Dilaton Coupled Quintessence Potentials

Parametrization of the dark energy model is a good method by which we can construct the scalar potential directly from the effective equation of state function ωσ(z) describing the properties of the dark energy. Applying this method to the dilaton coupled quintessence(DCQ) model, we consider four parametrizations of ω(z) and investigate the features of the constructed DCQ potentials, which poss...

متن کامل

ar X iv : h ep - t h / 06 10 01 8 v 2 1 0 N ov 2 00 6 Dilaton Coupled Quintessence Model in the ω − ω ′ Plane

In this paper, we regard dilaton in Weyl-scaled induced gravitational theory as a coupled quintessence. Based on this consideration, we investigate the dilaton coupled quintessence(DCQ) model in ω− ω plane, which is defined by the equation of state parameter for the dark energy and its derivative with respect to N(the logarithm of the scale factor a). We find the scalar field equation of motion...

متن کامل

Coupled Quintessence and Phantom Based On Dilaton

Based on dilatonic dark energy model, we consider two cases: dilaton field with positive kinetic energy(coupled quintessence) and with negative kinetic energy(phantom). In the two cases, we investigate the existence of attractor solutions which correspond to an equation of state parameter ω = −1 and a cosmic density parameter Ωσ = 1. We find that the coupled term between matter and dilaton can’...

متن کامل

Constraints on the Ω M − Ω Λ - plane from Elliptical Galaxy Counts ?

Here we present a pilot study into whether elliptical galaxy counts alone, can place a useful constraint on the Ω M − Ω Λ-plane. The elliptical galaxy counts are drawn from three surveys: The Millennium Galaxy Catalogue (16 > B KP N O > 20), the B-band Parallel Survey (20 > B AB > 24) and the Hubble Deep Fields (23 > B AB > 28). The elliptical luminosity function used in the modeling was derive...

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: International Journal of Modern Physics D

سال: 2007

ISSN: 0218-2718,1793-6594

DOI: 10.1142/s0218271807010614