tag:blogger.com,1999:blog-5439168179960787195.post8628413504129345838..comments2024-03-28T17:13:01.117+10:00Comments on Condensed concepts: What are the ten key concepts in quantum many-body physics?Ross H. McKenziehttp://www.blogger.com/profile/09950455939572097456noreply@blogger.comBlogger9125tag:blogger.com,1999:blog-5439168179960787195.post-44679635121272942342015-06-22T10:19:18.284+10:002015-06-22T10:19:18.284+10:00Adam, thanks for the useful feedback.
I agree tha...Adam, thanks for the useful feedback.<br /><br />I agree that the first 4 points overlap and could be combined. However, I think they are so basic and profound that they should be spelt out, particularly to beginning students.<br /><br />I would include phase transitions under broken symmetry. I agree that universality needs to be added. It ties in with several points.Ross H. McKenziehttps://www.blogger.com/profile/09950455939572097456noreply@blogger.comtag:blogger.com,1999:blog-5439168179960787195.post-17293309753904033152015-06-22T10:16:10.203+10:002015-06-22T10:16:10.203+10:00Sum rules is on the list under incoherent excitati...Sum rules is on the list under incoherent excitations. But, perhaps the title should be "Sum rules and incoherent excitations"Ross H. McKenziehttps://www.blogger.com/profile/09950455939572097456noreply@blogger.comtag:blogger.com,1999:blog-5439168179960787195.post-15107701638784428762015-06-22T10:14:03.818+10:002015-06-22T10:14:03.818+10:00Thanks for the suggestion.
On one level I agree. ...Thanks for the suggestion.<br /><br />On one level I agree. On another, I find it surprising how little hydrodynamics actually does get used. Could you give some specific examples?Ross H. McKenziehttps://www.blogger.com/profile/09950455939572097456noreply@blogger.comtag:blogger.com,1999:blog-5439168179960787195.post-84755785370634457932015-06-21T12:31:50.143+10:002015-06-21T12:31:50.143+10:00I would add sum rules to this list as they provide...I would add sum rules to this list as they provide useful constraints to any viable theory and are also helpful in analyzing experimental data.Sleehttps://www.blogger.com/profile/09424348412836852071noreply@blogger.comtag:blogger.com,1999:blog-5439168179960787195.post-16183421384023132052015-06-20T04:11:21.224+10:002015-06-20T04:11:21.224+10:00Coleman's article via his homepage:
http://www...Coleman's article via his homepage:<br />http://www.physics.rutgers.edu/%7Ecoleman/620/mbody/unfinished_frontier.pdfLeeFlighthttps://www.blogger.com/profile/04383505654583432753noreply@blogger.comtag:blogger.com,1999:blog-5439168179960787195.post-18617927949471314782015-06-20T02:32:02.192+10:002015-06-20T02:32:02.192+10:00I have never understood these spectral weight/spec...I have never understood these spectral weight/spectral function arguments, so I'll stay tuned!<br />stefanhttps://www.blogger.com/profile/09495628046446378453noreply@blogger.comtag:blogger.com,1999:blog-5439168179960787195.post-21430824121339580422015-06-19T17:36:52.320+10:002015-06-19T17:36:52.320+10:00In my opinion, the first 4 points are a bit redund...In my opinion, the first 4 points are a bit redundant, and could be condensed in two or three. I would add phase transitions (classical and quantum) and universality (possibly in a separate bullet point). The latter being a universal concept completely transversal in physics, as long as there a many degrees of freedom in the system.<br /><br />AdamAdamhttps://www.blogger.com/profile/14751736055298168498noreply@blogger.comtag:blogger.com,1999:blog-5439168179960787195.post-39208474731330824662015-06-19T14:02:22.125+10:002015-06-19T14:02:22.125+10:00I would add hydrodynamics to the list as it suppli...I would add hydrodynamics to the list as it supplies connections between low frequency excitations, conserved quantities and broken symmetries. stat-mecherhttps://www.blogger.com/profile/09861599041903336895noreply@blogger.comtag:blogger.com,1999:blog-5439168179960787195.post-45252084961570445352015-06-19T13:12:13.831+10:002015-06-19T13:12:13.831+10:00It looks interesting. I look forward to how you ti...It looks interesting. I look forward to how you tie it all together with only the spectral function.Peter Morganhttps://www.blogger.com/profile/06075268176382429701noreply@blogger.com