[HN Gopher] Planck stars, White Holes, Remnants and Planck-mass ...
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       Planck stars, White Holes, Remnants and Planck-mass quasi-particles
        
       Author : ngrilly
       Score  : 30 points
       Date   : 2024-07-22 20:05 UTC (2 hours ago)
        
 (HTM) web link (arxiv.org)
 (TXT) w3m dump (arxiv.org)
        
       | ngrilly wrote:
       | "This is a review of some recent developments on quantum gravity
       | aspects of black hole physics. In particular, we focus on a
       | scenario leading to the prediction of the existence of a Planck-
       | mass quasi-stable object, that could form a component of dark
       | matter."
       | 
       | -- Carlo Rovelli & Francesca Vidotto (the authors)
        
         | queuebert wrote:
         | As long as they aren't photino birds. -- Stephen Baxter,
         | probably [1].
         | 
         | 1. https://en.wikipedia.org/wiki/Ring_(Baxter_novel)
        
           | causality0 wrote:
           | Between him and Alastair Reynolds I've become very tired of
           | getting to the end of huge novel series and having the ending
           | make me feel like none of the events mattered.
        
             | pavel_lishin wrote:
             | With Stephen Baxter, I always feel like it mattered, but I
             | always feel sad. Forget happy endings - his books don't
             | even have happy middles, or happy beginnings.
        
       | api wrote:
       | I want planet nine to be a primordial black hole so we can send a
       | few probes out to orbit it and then chuck stuff into it to learn
       | about quantum gravity.
        
         | gumby wrote:
         | This is the extreme stereotype of humanity: travel somewhere
         | far away and continue to litter just like you do at home. No
         | respect for the locals!
         | 
         | Worse, since it's far away it doesn't come back to make a
         | bigger problem for you later.
        
       | fecal_henge wrote:
       | Lots of people seem to talk about things being a contributor to
       | dark matter. Is the general vibe that it's made of more than one
       | thing?
        
         | ajross wrote:
         | The general vibe is that (1) "dark matter" is absolutely
         | required to explain observed velocity distributions in the
         | universe at every scale larger than a few thousand stars and
         | (2) nothing we've observed so far can be it. So... sure. Maybe
         | all these ideas are right, though probably not. But something
         | has to be it, so we might as well keep throwing darts until
         | something lands.
        
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       (page generated 2024-07-22 23:04 UTC)