tag:blogger.com,1999:blog-2012179240296572398.post1224221574897678522..comments2024-03-29T14:13:50.694+00:00Comments on Retro-Forteana: Modified Newtonian DynamicsAndrew Mayhttp://www.blogger.com/profile/17073306343984931484noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-2012179240296572398.post-17883039630523180382018-03-24T19:29:09.139+00:002018-03-24T19:29:09.139+00:00"Most physicists have sided with dark matter ..."Most physicists have sided with dark matter ..." For pro-MOND information, google "kroupa milgrom", "mcgaugh milgrom", "sanders milgrom", and "scarpa milgrom".David Brownhttps://www.blogger.com/profile/10537922851243581921noreply@blogger.comtag:blogger.com,1999:blog-2012179240296572398.post-19172279370953519852017-06-07T13:42:27.670+01:002017-06-07T13:42:27.670+01:00"... MOND versus dark matter ..." It mig..."... MOND versus dark matter ..." It might be possible to use D-branes to explain how dark matter can explain the empirical successes of MOND. D-branes and /or fivebrane solitons might enable alternate universes to gravitationally influence our universe in such a way that MOND is approximately correct.<br />Consider 5 conjectures:<br />(1) The empirical successes of MOND indicate that supersymmetry needs to be replaced by MOND-compatible supersymmetry.<br />(2) Gravitons and gravitinos have D-brane charges that constitute empirical evidence that D-branes and alternate universes influence gravitational accelerations.<br />(3) Gravitinos are MOND-chameleon particles that have variable effective mass depending upon nearby gravitational acceleration. The MON-chameleon property somehow represents how the structure of the multiverse is maintained.<br />(4) For galactic dynamics, most of the mass-energy of dark matter particles has the form of MOND-chameleon particles that have variable effective mass depending upon nearby gravitational acceleration. The empirical successes of MOND can be explained as follows: Replace the -1/2 in the standard form of Einstein’s field by a term which represents an apparent (but not real) failure of general relativity theory. The apparent failure is caused by ignoring the existence of MOND-chameleon particles. In other words, replace the -1/2 by -1/2 + MOND-chameleon-tracking-function — how might this explain MOND? In the range of validity of MOND, assume that MOND-chameleon-tracking-function is roughly a constant = sqrt((60±10)/4) * 10^–5 . Outside the range of validity of MOND, assume that MOND-chameleon-tracking function is roughly = 0 except for an unspecified transition range. An easy scaling argument shows that this amounts to boosting the gravitational redshift in such a way that there appears to be a universal acceleration constant as postulated in MOND.<br />(5) It is possible to mathematically define a D-brane corresponding to any plausible MOND-chameleon-tracking function.<br />For more thoughts on the foundations of physics and dark matter, see:<br /><a href="https://tritonstation.wordpress.com" rel="nofollow">Triton Station: A Blog about the Science and Sociology of Cosmology and Dark Matter, Stacy McGaugh</a>David Brownhttps://www.blogger.com/profile/10537922851243581921noreply@blogger.com