1207.4024 (Sumit Kumar et al.)

Deviation From ΛCDM With Cosmic Strings Networks    [PDF]

Sumit Kumar, Akhilesh Nautiyal, Anjan A. Sen

In this work, we consider frustrated network of cosmic strings to explain possible deviation from \Lambda CDM behaviour. We use different observational data to put constraint on the model and show that a small but non zero contribution from the string network is allowed which can explain the possible small departure from \Lambda CDM evolution. By calculating the Bayesian Evidence, we show that our model and the concordance \Lambda CDM model are equally favored by the observational data.

View original: http://arxiv.org/abs/1207.4024