Could CSL-1 Be Ruled Out as a Cosmic String?

  • Thread starter Thread starter Kalimaa23
  • Start date Start date
  • Tags Tags
    String
Physics news on Phys.org
Dimitri Terryn said:
SLC-1 rather, sorry...

Has this been discussed already?

http://motls.blogspot.com/2006/01/csl-1-is-not-cosmic-string.html#comments

Hi Dimitri,
if you mean has CSL-1 been discussed here at PF before, the answer is yes.

We had a thread about it around February 2005---about a year ago---IIRC.
https://www.physicsforums.com/showthread.php?t=57052

But the confirmation that the seeming double image is NOT evidence of a cosmic string is a NEW RESULT. This has not been mentioned on PF as far as I know.

In case of interest, here are some links to last year's and also the recent discussion of CSL-1.
http://www.math.columbia.edu/~woit/wordpress/?p=123

http://www.math.columbia.edu/~woit/wordpress/?p=327

http://www.math.columbia.edu/~woit/blog/archives/000037.html

BTW it does seem to be called CSL, not some other permutation of the letters, although I don't think that matters very much at this point in the story :smile:
 
Last edited:
marcus said:
Hi Dimitri,
if you mean has CSL-1 been discussed here at PF before, the answer is yes.
In case of interest, here are some links to last year's and also the recent discussion of CSL-1.

BTW it does seem to be called CSL, not some other permutation of the letters, although I don't think that matters very much at this point in the story :smile:

I was indeed referring to the new result.
Never mind the idiocy, it's exam time and I need to sleep more.
 
https://arxiv.org/pdf/2503.09804 From the abstract: ... Our derivation uses both EE and the Newtonian approximation of EE in Part I, to describe semi-classically in Part II the advection of DM, created at the level of the universe, into galaxies and clusters thereof. This advection happens proportional with their own classically generated gravitational field g, due to self-interaction of the gravitational field. It is based on the universal formula ρD =λgg′2 for the densityρ D of DM...
Thread 'LQG Legend Writes Paper Claiming GR Explains Dark Matter Phenomena'
A new group of investigators are attempting something similar to Deur's work, which seeks to explain dark matter phenomena with general relativity corrections to Newtonian gravity is systems like galaxies. Deur's most similar publication to this one along these lines was: One thing that makes this new paper notable is that the corresponding author is Giorgio Immirzi, the person after whom the somewhat mysterious Immirzi parameter of Loop Quantum Gravity is named. I will be reviewing the...
Many of us have heard of "twistors", arguably Roger Penrose's biggest contribution to theoretical physics. Twistor space is a space which maps nonlocally onto physical space-time; in particular, lightlike structures in space-time, like null lines and light cones, become much more "local" in twistor space. For various reasons, Penrose thought that twistor space was possibly a more fundamental arena for theoretical physics than space-time, and for many years he and a hardy band of mostly...
Back
Top