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Deciphering inflation with gravitational waves: Cosmic microwave background polarization vs direct detection with laser interferometers
A detection of the primordial gravitational wave background is considered to be the ``smoking-gun'' evidence for inflation. While superhorizon waves are probed with cosmic microwave background (CMB) polarization, the relic background will be studied with laser interferometers. The long lever arm spanned by the two techniques improves constraints on the …