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Snowmass White Paper: Gravitational Waves and Scattering Amplitudes
Alessandra Buonanno, Mohammed Khalil, Donal O'Connell +3
We review recent progress and future prospects for harnessing powerful tools from theoretical high-energy physics, such as scattering amplitudes and effective field theory, to deve…
Reheating and dangerous relics in pre-big bang string cosmology
Alessandra Buonanno, Martin Lemoine, Keith A. Olive
We discuss the mechanism of reheating in pre-big bang string cosmology and we calculate the amount of moduli and gravitinos produced gravitationally and in scattering processes of…
Reduction of the two-body dynamics to a one-body description in classical electrodynamics
Alessandra Buonanno
We discuss the mapping of the conservative part of two-body electrodynamics onto that of a test charged particle moving in some external electromagnetic field, taking into account…
Pre-big bang bubbles from the gravitational instability of generic string vacua
A. Buonanno, T. Damour, G. Veneziano
We formulate the basic postulate of pre-big bang cosmology as one of ``asymptotic past triviality'', by which we mean that the initial state is a generic perturbative solution of t…
Effective action and tension renormalization for cosmic and fundamental strings
Alessandra Buonanno, Thibault Damour
We derive the effective action for classical strings coupled to dilatonic, gravitational, and axionic fields. We show how to use this effective action for: (i) renormalizing the st…
Quantum Inhomogeneities in String Cosmology
A. Buonanno, K. Meissner, C. Ungarelli +1
Within two specific string cosmology scenarios --differing in the way the pre- and post-big bang phases are joined-- we compute the size and spectral slope of various types of cosm…