tag:blogger.com,1999:blog-1074502515186128083.post568967434381978883..comments2023-11-14T12:59:44.505-05:00Comments on Hogg's Ideas: cosmology with finite-range gravityHogghttp://www.blogger.com/profile/18398397408280534592noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-1074502515186128083.post-86879037412497741202012-10-28T18:48:49.545-04:002012-10-28T18:48:49.545-04:00Although there are lot of papers on modified gravi...Although there are lot of papers on modified gravity , all such theories<br />designed to explain dark energy or dark matter always run into some problems with instability, or clash with solar system tests, or problems in strong field. There is however one extension (not modification) to GR<br />known as Einstein-Cartan-Kibble-Sciama gravity, which has recently been shown to solve initial singularity, horizon and flatness problem(without inflation), baryon asymmetry as well cosmological constant problem. Unfortunately very few people are working on this and you won't get to hear much of this in cosmology conferences.<br />Would be interested to know your take on this.Shantanuhttps://www.blogger.com/profile/16322812456382858228noreply@blogger.comtag:blogger.com,1999:blog-1074502515186128083.post-12986868357418995852012-10-28T18:33:09.614-04:002012-10-28T18:33:09.614-04:00Although there is an explosion of papers on modifi...Although there is an explosion of papers on modified gravity theories,I think any modification to GR to explain dark energy or dark matter<br />always runs into some problem either in strong field limit or wrt stability.<br /><br />However wanted to draw your attention to an extension(rather than modification) to GR called Einstein-Cartan-Kibble-Sciama gravity on which very few people are working on which has recently been shown<br />could solve the flatness and horizon problem without inflation, baryon asymmetry, cosmological constant problem, arrow of time, etc.<br />Would be interested to hear your opinion on this.<br /><br /><br /><br /><br />Shantanuhttps://www.blogger.com/profile/16322812456382858228noreply@blogger.com