Primordial Gravitational Waves. and Black Holes:. Is it worth the search?. Sirichai Chongchitnan (with George Efstathiou) Institute of Astronomy University of Cambridge 25th September 2006. Questions. What will we learn about inflation? e.g. Energy scale
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
and Black Holes:
Is it worth the search?
Inflation predicts a *small*
stochastic background of GW,
but how small?
WMAP3 + SDSS :
r < 0.2 (95%)
at k = 0.002 Mpc-1[Peiris, Easther]
Planck, BICEP, CLOVER, QUIET etc.
Joseph Weber 1969
But V(Φ) is unknown!
Evolve “flow equations” till inflation ends
≡a potential V(Φ)
Specify initial Taylor coefficients of H(Φ)
✱H(Φ) determines ωgw directly
✱Dynamics well-understood [Chongchitnan and Efstathiou PRD’05]
At f ≃ 0.1 - 1 Hz,
for all models of single field inflation
[Chongchitnan and Efstathiou PRD’06]
[Viel et al’04] ,[Seljak’05]
(r= few x 10-3)
Directly detectable GW ⇔ “pathological” potential
Future GW experiments will probe
a tiny range of energy scales
[Efstathiou and Chongchitnan Prog.Theor.Phys.’06]
e.g. , r ≃ 10-10 , V1/4 ≃ 1014 GeV