tag:blogger.com,1999:blog-5439168179960787195.post2648891077008167091..comments2024-03-28T17:13:01.117+10:00Comments on Condensed concepts: Quantum viscosity talkRoss H. McKenziehttp://www.blogger.com/profile/09950455939572097456noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-5439168179960787195.post-5664803428836891302018-04-04T01:45:50.425+10:002018-04-04T01:45:50.425+10:00So could dark matter be looked at as a fluid and r...So could dark matter be looked at as a fluid and regular matter is congealing within this fluid like sediments in oil?? If dark matter were fuidic in nature does this conflict with any gravitational laws??Anonymoushttps://www.blogger.com/profile/07273227426090286718noreply@blogger.comtag:blogger.com,1999:blog-5439168179960787195.post-18696737787870899592016-06-17T10:27:04.792+10:002016-06-17T10:27:04.792+10:00I am sorry you deleted your comment as you asked s...I am sorry you deleted your comment as you asked some good questions.<br /><br />What about vertex corrections?<br />We use DMFT which ignores them. In our paper we argue that it is unlikely that they will change things by more than an order of magnitude, probably much less. Hence, the conjectured bounds will still be violated?<br /><br />What about going beyond Kubo and linear response theory?<br />We are only considering a Newtonian fluid with a well defined shear viscosity. Hence, the Kubo formula is appropriate. <br />Certainly, for non-linear response, one would need to consider non-equlibrium methods, such as based on Keldysh.Ross H. McKenziehttps://www.blogger.com/profile/09950455939572097456noreply@blogger.comtag:blogger.com,1999:blog-5439168179960787195.post-36691811065080038662016-06-14T03:33:00.922+10:002016-06-14T03:33:00.922+10:00This comment has been removed by the author.Joelson F. Silvahttps://www.blogger.com/profile/13156079327421316941noreply@blogger.com