{"id":694,"date":"2009-04-04T23:48:39","date_gmt":"2009-04-04T23:48:39","guid":{"rendered":"http:\/\/spinor.info\/weblog\/?p=694"},"modified":"2009-04-04T23:48:39","modified_gmt":"2009-04-04T23:48:39","slug":"stvg-is-not-teves","status":"publish","type":"post","link":"https:\/\/spinor.info\/weblog\/?p=694","title":{"rendered":"STVG is not TeVeS"},"content":{"rendered":"<p>The <a href=\"http:\/\/spinor.info\/weblog\/?page_id=80\">gravitational theory<\/a> that I&#8217;ve been working on for some time with John Moffat is called STVG, or <a href=\"http:\/\/en.wikipedia.org\/wiki\/Scalar-tensor-vector_gravity\">Scalar-Tensor-Vector Gravity<\/a>. It grew out of Moffat&#8217;s investigation of Nonsymmetric Gravity.<\/p>\n<p>There is also a phenomenological formula called MOND (MOdified Newtonian Dynamics) that effectively flattens out the acceleration curve at high radii from a point source. MOND is nothing more than a formula designed by its creator, Mordechai Milgrom, to solve a specific problem, namely the rotation curves of galaxies. It is not rooted in any theory, and in fact, it is known to contradict some; for instance, it violates the law of conservation of energy and momentum. This is why Jacob Bekenstein endeavored to create a relativistic theory called TeVeS, which fixes MONDs problems, while still gives the approximate MOND acceleration formula in the case of weak fields.<\/p>\n<p>Both STVG and TeVeS are gravity theories, and both happen to incorporate tensor, vector, and scalar fields. Beyond that, however, there&#8217;s nothing in common between the two theories.<\/p>\n<p>Unfortunately, many Wikipedians don&#8217;t know this, and try from time to time to merge the STVG and TeVeS articles. Hopefully not any longer&#8230; I just posted a long, fairly complete description of STVG on Wikipedia.<\/p>\n<fb:like href='https:\/\/spinor.info\/weblog\/?p=694' send='true' layout='standard' show_faces='true' width='450' height='65' action='like' colorscheme='light' font='lucida grande'><\/fb:like>","protected":false},"excerpt":{"rendered":"<p>The gravitational theory that I&#8217;ve been working on for some time with John Moffat is called STVG, or Scalar-Tensor-Vector Gravity. It grew out of Moffat&#8217;s investigation of Nonsymmetric Gravity. There is also a phenomenological formula called MOND (MOdified Newtonian Dynamics) that effectively flattens out the acceleration curve at high radii from a point source. MOND <a href='https:\/\/spinor.info\/weblog\/?p=694' class='excerpt-more'>[&#8230;]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-694","post","type-post","status-publish","format-standard","hentry","category-physics","category-3-id","post-seq-1","post-parity-odd","meta-position-corners","fix"],"_links":{"self":[{"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/posts\/694","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=694"}],"version-history":[{"count":2,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/posts\/694\/revisions"}],"predecessor-version":[{"id":696,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/posts\/694\/revisions\/696"}],"wp:attachment":[{"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=694"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=694"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}