Not good news for Saul Perlmutter, Rocky Kolb and Michael Turner.

On Jul 3, 2015, at 10:27 PM, nick herbert <This email address is being protected from spambots. You need JavaScript enabled to view it.> wrote:

There goes the neighborhood ;-)I suspect this paper is correct.Oh well I will throw in the towel on my Popper falsifiable future hologram picture of dark energy etc since there is probably no future de Sitter horizon after all and “dark energy” will go the way of N-Rays, superluminal neutrinos, the pre-big bang tensor/scalar ratio for gravity radiation predicted by Penrose in cycles of time etc.The other main problem is the one shared by most “pre-big-bang” ideas: how do you ever test them? Penrose and a collaborator last year created a stir by claiming to see in the CMB patterns of the sort he argues might be expected from black hole decays late in an era before the Big Bang, but it’s not clear there’s a real prediction here, and others who have redone this analysis say they see nothing. Peter Woit

## Cosmic microwave background constraints on the tensor-to ...

arxiv.org › astro-pharXivby K Lau - 2013 - Related articlesMay 16, 2013 - Abstract: One of the main goals of modern cosmic microwave background (CMB) missions is to measure the tensor-to-scalar ratio $r$ ...## Theoretical bounds on the tensor-to-scalar ratio in the ...

arxiv.org › astro-pharXivby L Boubekeur - 2012 - Cited by 8 - Related articlesAug 1, 2012 - ... bounds on the tensor-to-scalar ratio in the cosmic microwave background ... We derive theoretical bounds on the tensor fraction, as a ...## The primordial power spectrum - NED

ned.ipac.caltech.edu/.../Kinney4_6.ht...The scalar, or density fluctuation amplitude when a mode crosses the horizon is given by ... about the scale of the horizon size today, corresponding to the CMB quadrupole. ... so that the tensor/scalar ratio and the tensor spectral index are not ...California Institute of Technology## BICEP2 results: inflation and the tensor modes | astrobites

Mar 17, 2014 - If you could see the CMB to high, high precision, this pattern would look like tiny ... The tensor-to-scalar ratio is the ratio of gravitational waves to ...## How to determine scalar-to-tensor ratio r from CMB ...

Oct 26, 2014 - CMB polarization spectrum can tell us about the primordial scalar and tensor perturbation. By analyze B and E mode angular spectrum power ...However, it’s looking better for supersymmetry.“A beautiful theory is murdered by an ugly fact.” Richard Feynman