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Free keywords:
Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE,General Relativity and Quantum Cosmology, gr-qc,High Energy Physics - Theory, hep-th
Abstract:
This Astro-2020 White Paper deals with what we might learn from future
gravitational wave observations about the early universe phase transitions and
their energy scales, primordial black holes, Hubble parameter, dark matter and
dark energy, modified theories of gravity and extra dimensions.