POST-INFLATION INCREASE OF THE COSMOLOGICAL TENSOR-TO-SCALAR PERTURBATION RATIO
Copyright policy )POST-INFLATION INCREASE OF THE COSMOLOGICAL TENSOR-TO-SCALAR PERTURBATION RATIO
We investigate the possibility that the amplitude of scalar density perturbations may be damped after inflation. This would imply that CMB anisotropies do not uniquely fix the amplitude of the perturbations generated during inflation and that the present tensor-to-scalar ratio might be larger than that produced in inflation, increasing the prospects of detection of primordial gravitational radiation. It turns out, however, that the damping of density perturbations is hard to achieve.
- University of Chicago United States
- University of North Texas United States
- The Abdus Salam International Centre for Theoretical Physics (ICTP) Italy
- Fermilab United States
- University of Padua Italy
cosmological perturbations, General Physics, Approximation procedures, weak fields in general relativity and gravitational theory, Gravitational Radiation, Astrophysics (astro-ph), FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, Damping, General Relativity and Quantum Cosmology, Detection, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Amplitudes, 71 Classical And Quantum Mechanics, Scalars Astrophysics, inflation, cosmology, Relativistic cosmology
cosmological perturbations, General Physics, Approximation procedures, weak fields in general relativity and gravitational theory, Gravitational Radiation, Astrophysics (astro-ph), FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, Damping, General Relativity and Quantum Cosmology, Detection, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Amplitudes, 71 Classical And Quantum Mechanics, Scalars Astrophysics, inflation, cosmology, Relativistic cosmology
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