VISCOUS CARDASSIAN UNIVERSE
نویسندگان
چکیده
منابع مشابه
Generalized Cardassian Expansion : Models in which the Universe is Flat , Matter Dominated , and Accelerating
The Cardassian universe is a proposed modification to the Friedmann Robertson Walker equation in which the universe is flat, matter dominated, and accelerating. Here we generalize the original Cardassian proposal to include additional variants on the FRW equation; specific examples are presented. In the ordinary FRW equation, the right hand side is a linear function of the energy density, H2 ∼ ...
متن کاملGeneralized Cardassian Expansion : Models in Which the Universe is Flat , Matter Dominated
The Cardassian universe is a proposed modification to the Friedmann Robertson Walker (FRW) equation in which the universe is flat, matter dominated, and accelerating. Here we generalize the original Cardassian proposal to include additional variants on the FRW equation. Specific examples are presented. In the ordinary FRW equation, the right hand side is a linear function of the energy density,...
متن کاملGeneralized Cardassian Expansion: a Model in Which the Universe Is Flat, Matter Dominated, and Accelerating
The Cardassian universe is a proposed modification to the Friedmann Robertson Walker equation (FRW) in which the universe is flat, matter dominated, and accelerating. In this presentation, we generalize the original Cardassian proposal to include additional variants on the FRW equation; specific examples are presented. In the ordinary FRW equation, the right hand side is a linear function of th...
متن کاملCardassian Expansion : a Model in which the Universe is Flat , Matter Dominated , and Accelerating
A modification to the Friedmann Robertson Walker equation is proposed in which the universe is flat, matter dominated, and accelerating. An additional term, which contains only matter or radiation (no vacuum contribution), becomes the dominant driver of expansion at a late epoch of the universe. During the epoch when the new term dominates, the universe accelerates; we call this period of accel...
متن کاملObservational Constraints on Cardassian Expansion
In this work, we have studied the observational constraints on the Cardassian Model for the dark energy. We have compared the model with existing Supernova data. The dependence of the location of the Cosmic Microwave Background Radiation (CMBR) peaks on the parameters of the model have also been studied. We find, in particular that observational data arising from Archeops for the location of th...
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: International Journal of Modern Physics D
سال: 2009
ISSN: 0218-2718,1793-6594
DOI: 10.1142/s0218271809015102