Johan Noldus is an interesting "outsider" figure on the margins of QG. This thread (if he happens to come across it) will give him a chance to make himself visible to us and to discuss his approach to QG---which he asserts to be radically different from that taken by the other efforts to put Quantum Mechanics together with Gen Rel. He indicates that he thinks several other approaches are doomed to fail or have already failed because they have gone about things the wrong way----his feels his way is more promising. Noldus has only one paper that I can find about this. He has some other earlier papers from 2002-2004 about other stuff, that were published in the electronic journal CQG, but this paper where he presents his reverse QG idea has apparently not yet been accepted by CQG. Here is the paper which I propose we discuss (if others are interested) in this thread. http://arxiv.org/abs/gr-qc/0508104 Date (v1): Fri, 26 Aug 2005 12:46:01 GMT (16kb) Date (revised v2): Mon, 5 Sep 2005 21:38:42 GMT (16kb) Date (revised v3): Sat, 10 Sep 2005 09:33:54 GMT (16kb) Date (revised v4): Mon, 10 Oct 2005 17:24:46 GMT (18kb) Towards a fully consistent relativistic quantum mechanics and a change of perspective on quantum gravity Johan Noldus 17 pages, no figures, entire subsection added. submitted to CQG "This paper can be seen as an exercise in how to adapt quantum mechanics from a strict relativistic perspective while being respectful and critical towards the experimental achievements of the contemporary theory. The result is a fully observer independent relativistic quantum mechanics for N particle systems without tachyonic solutions. A remaining worry for the moment is Bell's theorem." The title date on the paper is January 4, 2006 and there is no institutional affiliation. The author's email is the public "gmail". The acknowledgment paragraph has this:"...I am indebted to my old mentor Norbert Van den Bergh for continuous encouragement and his insistence upon a locally causal quantum mechanics." So this is someone who used to be at the University of Ghent in Belgium---and might now have some institutional connection there or elsewhere, but does not indicate it. From the arxiv record one gathers that Noldus has revised the paper several times and submitted it to CQG in October 2005. Noldus can be supposed to be in some suspense, waiting to see if the paper will pass peer review and will be accepted for publication. Or he can be imagined as very happy frolicking in the Ghent spring sunshine because he has he has heard from CQG that it will be published. In any case this is an authentic QG outsider and I would be happy to hear from him if he wants to come out in the open and explain to us his radical reversed approach to QG.