[Moderator's note: This posting is on the edge of discussing "personal   
   theories", because according to standard physics anti-particles have   
   positive mass and also positive energy. It's the very reason, why there   
   are anti-particles at all: To make physical sense of the   
   negative-frequency modes in the mode decomposition of quantum fields,   
   leading to local microcausal QFT and the corresponding realizations of   
   the proper orthochronous Poincare group, upon which the utmost   
   successful Standard Model of elementary particles is based, one has to   
   introduce anti-particles (Feynman-Stueckelberg trick). HvH.]   
      
   On Friday, August 17, 2018 at 8:07:39 AM UTC+1, Phillip Helbig (undress to   
   reply) wrote:   
   > In article <2c0366cf-d2b2-4d5e-ad1b-47cd027030e5@googlegroups.com>,   
   > writes:   
   >   
   > > > If you had two negative masses they would attract. Because with the   
   > > > negative mass acceleration is towards a positive mass this experiment   
   > > > may not be able to determine if antimatter is really negative mass.   
   >   
   > If I recall correctly, not long ago Steve Carlip pointed out here that   
   > positive mass attracts everything, including negative mass, and negative   
   > mass repels everything.   
   >   
      
   Sorry, I missed that post. But that information is also in a wiki web page   
   called 'negative mass' which I have based my work on.   
      
   > > In which case, whatever the findings of Aegis, antimatter could   
   > > have negatively signed mass. That would allow antimatter to cause   
   > > dark energy/matter. The instant reaction to that is that antimatter   
   > > cannot be dark matter as dark matter does not interact with EM.   
   > >   
   > > However, my suggestion is that any antimatter with EM properties   
   > > will have long ago annihilated with EM matter. Leaving only the   
   > > neutrinos and antineutrinos to act as DE and DM.   
   >   
   > This is then independent of whether negative-mass antimatter previously   
   > annihilated.   
   >   
      
   Yes, it is independent point, but I was trying to use negative mass as a   
   reason why there is still some matter left in the universe. Also, not all   
   negative mass annihilated else there would be no negative mass left over to   
   cause DE and DM.   
      
      
   > > IMO this does not   
   > > disagree with what Susskind described in his online Stamford course   
   > > on Cosmology.   
   >   
   > Neutrinos cannot be cold dark matter, because a) they are not cold and   
   > b) their mass is not large enough. You have to postulate some sort of   
   > "neutrino" beyond the standard model.   
   >   
      
   Several possibilities here.   
   1. If negative mass is DM then it may not be located where DM is calculated   
   to be. For example a negative mass could sit around a volume (and repel it   
   inwards) while its imaginary positive-mass doppleganger would be thought to   
   sit inside the volume. That might affect the properties expected of the DM,   
   the properties may be expected to be different for a central positive mass   
   than for a negative mass halo.   
      
    2. I like the idea of different generations of higgs, with DM maybe being   
   a lighter generation not yet discovered.   
   I am not clear about the implications for DM and DE of the scalar properties   
   of the higgs field. E.g. could a higgs field chase/ move towards matter to   
   act as DM. [Note that with negative mass as DM, matter tries to avoid DM but   
   DM chases matter.] Higgs fields seem to me to be ubiquitous, which could be   
   a pointer to them being DE. Also, I read that the higgs field is measured   
   as   
   massless, unlike the higgs boson, which would rule out it being DM.(?)   
   In my preon model the higgs boson with w.i. -0.5 is the exact antiparticle   
   of the higgs with w.i. +0.5. [That is, one eigenstate is made of the exact   
   antipreons of those that the other eigenstate has.] So there could be a   
   negative mass higgs which could act as DE, and maybe DM.   
      
   3. My preon model also allows an elementary particle to be built which has   
   zero properties, except for mass. This could be a DM particle. Like a higgs   
   with the w.i. property removed. The aim of my naive preon model was to   
   build bosons and fermions out of a common pool of preons. IMO this is a   
   similar aim to SUSY which allows fermions and bosons to convert to one   
   another. So SUSY should be able to, more formally, find this DM candidate.   
   This would be another spin 0 scalar, so again I am not sure of scalar   
   immplications for DM.   
      
      
      
      
   > > The oddity is why there was any matter left over and   
   > > not annihilated in the early universe.   
   >   
   > That is a separate question.   
   >   
      
   Yes, it is a separate question, but my recent work has been to try link DE   
   and DM to negative mass. And now I suspect further that negative mass and   
   'runaway motion' has also allowed the universe to avoid complete   
   annihilation by antimatter (so far).   
      
      
      
   > > I think I have explained in my computer simulation why there was   
   > > an imbalance of matter and antimatter in the early universe: some   
   > > of the antimatter (assumed to be signed with negative mass) could   
   > > not keep up with the positive mass in the 'runaway motion' effect.   
   >   
   > Why not?   
      
   In my toy simulation, some of the negative masses get left behind. They get   
   left behind because negative masses repel one another and distribute evenly   
   through all available space. Some of that space is left far behind the   
   space matter currently occupies. This is caused by a dark energy effect.   
      
   Is it permanently left behind? I am not sure, as negative mass also chases   
   positive mass [dark matter effect], so it will have two competing forces   
   acting on it. One to keep away and the other to catch up. But if it lags so   
   far behind that not even light could catch up, then we are safe from   
   annihilation.   
      
   >   
   > > If correct, some of the neutrinos/antineutrinos, moving at speed   
   > > c,   
   >   
   > Neutrinos/antineutrinos do not move at speed c.   
      
   Ok. Neutrinos move at the very fast end of the speed spectrum, but less than   
   c.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   
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