Not signed in (Sign In)

Not signed in

Want to take part in these discussions? Sign in if you have an account, or apply for one below

  • Sign in using OpenID

Site Tag Cloud

2-category 2-category-theory abelian-categories adjoint algebra algebraic algebraic-geometry algebraic-topology analysis analytic-geometry arithmetic arithmetic-geometry book bundles calculus categorical categories category category-theory chern-weil-theory cohesion cohesive-homotopy-type-theory cohomology colimits combinatorics complex complex-geometry computable-mathematics computer-science constructive cosmology definitions deformation-theory descent diagrams differential differential-cohomology differential-equations differential-geometry digraphs duality elliptic-cohomology enriched fibration foundation foundations functional-analysis functor gauge-theory gebra geometric-quantization geometry graph graphs gravity grothendieck group group-theory harmonic-analysis higher higher-algebra higher-category-theory higher-differential-geometry higher-geometry higher-lie-theory higher-topos-theory homological homological-algebra homotopy homotopy-theory homotopy-type-theory index-theory integration integration-theory k-theory lie-theory limits linear linear-algebra locale localization logic mathematics measure-theory modal modal-logic model model-category-theory monad monads monoidal monoidal-category-theory morphism motives motivic-cohomology nlab noncommutative noncommutative-geometry number-theory object of operads operator operator-algebra order-theory pages pasting philosophy physics pro-object probability probability-theory quantization quantum quantum-field quantum-field-theory quantum-mechanics quantum-physics quantum-theory question representation representation-theory riemannian-geometry scheme schemes set set-theory sheaf simplicial space spin-geometry stable-homotopy-theory stack string string-theory superalgebra supergeometry svg symplectic-geometry synthetic-differential-geometry terminology theory topology topos topos-theory tqft type type-theory universal variational-calculus

Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.

Welcome to nForum
If you want to take part in these discussions either sign in now (if you have an account), apply for one now (if you don't).

nLab > Latest Changes: de Sitter spacetime

Bottom of Page

1 to 13 of 13

  1.  
    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeJul 3rd 2018

    added pojnter to Maldacena-Nunez 01

    diff, v7, current

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeJul 3rd 2018

    added pointer to Witten 01

    diff, v8, current

    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeJul 5th 2018

    added pointer to today’ BDDGS 18

    diff, v9, current

    • CommentRowNumber4.
    • CommentAuthorUrs
    • CommentTimeSep 13th 2018
    • (edited Sep 13th 2018)

    added this pointer

    and then added a bunch of older references on instability of de Sitter in QFT, now here

    diff, v20, current

    • CommentRowNumber5.
    • CommentAuthorUrs
    • CommentTimeSep 19th 2018
    • (edited Sep 19th 2018)

    The debate over the validity of Kallosh-Kachru-Linde-Trivedi 03 (“KKLT”) keeps going, have added pointer to today’s

    • Jakob Moritz, Ander Retolaza, Alexander Westphal, On uplifts by warped anti-D3-branes (arXiv:1809.06618)

    But “debate” is maybe not quite the right word. While the critics try to be careful about their arguments, as highlighted in the above article, the reaction from KKL, so far, is essentially a plain repetition of the same story that is being critized on concrete points, accompanied by what seems to need to be called a PR campaign for the three Stanford professors involved (here).

    diff, v22, current

    • CommentRowNumber6.
    • CommentAuthorUrs
    • CommentTimeJul 2nd 2019

    added more basic references

    as well as a graphics on different spatial slicings of de Sitter spacetime

    diff, v29, current

    • CommentRowNumber7.
    • CommentAuthorUrs
    • CommentTimeAug 31st 2020

    added pointer to today’s

    • Michael Dine, Jamie A.P. Law-Smith, Shijun Sun, Duncan Wood, Yan Yu, Obstacles to Constructing de Sitter Space in String Theory (arXiv:2008.12399)

    diff, v34, current

    • CommentRowNumber8.
    • CommentAuthorUrs
    • CommentTimeMar 12th 2021

    Added pointer to today’s

    • Ivano Basile, Alessia Platania, String Tension between de Sitter vacua and Curvature Corrections (arXiv:2103.06276)

      “We show that the resulting higher-derivative α′\alpha'-corrections forbid the existence of de Sitter vacua, at least in regimes where string-loop corrections can be neglected.”

    (There is too much of this debate on the arXiv each weak to sensibly keep our references updated, but this one stood out in its concrete claim.

    One day the community will converge here. And then maybe realize that they have been in disconnect from the SM-model building community all along…)

    diff, v35, current

    • CommentRowNumber9.
    • CommentAuthorUrs
    • CommentTimeJan 12th 2023
    • (edited Jan 12th 2023)

    added pointer to:

    reviewed in:

    diff, v36, current

  10. Hi, I noticed that the text “(e.g. here)” in Section 1 contains a broken link, added back in 2017 (revision #5).

    The target of the link is

    https://books.google.de/books?id=vtEkBAAAQBAJ=PA135=zsId1G2lKU=anti-de%20Sitter%20quotient%20of%20SO(3%2C2)=PA135#v=onepage=anti-de%20Sitter%20quotient%20of%20SO(3,2)=false

    which now just redirects to the Google search home page.

    I don’t think that the Internet Archive’s Wayback Machine is much help in this case. Urs, do you remember which text this was?

    • CommentRowNumber11.
    • CommentAuthorUrs
    • CommentTimeMar 25th 2024

    Thanks for the heads-up.

    This is a classical statement for which one could give any number of references. I have now changed the broken link to a pointer to Blau’s lectures (§39.1, around p. 883)

    diff, v40, current

    • CommentRowNumber12.
    • CommentAuthorUrs
    • CommentTimeMar 25th 2024

    (I am about to hit the road for a small vacation. Will not be replying, or not as often, in the next few days.)

    • CommentRowNumber13.
    • CommentAuthorUrs
    • CommentTimeMay 6th 2024
    • (edited May 6th 2024)

    added pointer to today’s

    diff, v42, current

1 to 13 of 13

  1.