منابع مشابه
Fast cosmological parameter estimation using neural networks
We present a method for accelerating the calculation of CMB power spectra, matter power spectra and likelihood functions for use in cosmological parameter estimation. The algorithm, called COSMONET, is based on training a multilayer perceptron neural network and shares all the advantages of the recently released PICO algorithm of Fendt & Wandelt, but has several additional benefits in terms of ...
متن کاملCosmological Consequences of Superconducting String Networks
We consider the cosmological consequences of a network of superconducting cosmic strings. For strong enough current the period of friction domination never ends. Instead a plasma scaling solution is reached. We demonstrate that this gives rise to a very different cosmology than the usual horizon scaling solution. In particular the string network gives rise to a distinct imprint on the microwave...
متن کاملMultidimensional cosmological models: cosmological and astrophysical implications
We investigate four-dimensional effective theories which are obtained by dimensional reduction of multidimensional cosmological models with factorizable geometry and consider the interaction between conformal excitations of the internal space (geometrical moduli excitations) and Abelian gauge fields. It is assumed that the internal space background can be stabilized by minima of an effective po...
متن کاملCosmological background solutions and cosmological backreactions
The cosmological backreaction proposal, which attempts to account for observations without a primary dark energy source in the stress-energy tensor, has been developed and discussed by means of different approaches. Here, we focus on the concept of cosmological background solutions in order to develop a framework to study the backreaction proposal.
متن کاملcosmological argument in the west
cosmological argument has been one of the most significant philosophical and theological arguments in religious traditions of different religions. in the western theo-philosophical tradition, there have been both different interpretations and numerous criticisms presented about this argument. in this article, the most important of those arguments and their criticisms are both taken into conside...
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: New Journal of Physics
سال: 2014
ISSN: 1367-2630
DOI: 10.1088/1367-2630/16/9/093031