Amplitudes meet cosmology: A (scalar) primer
P Benincasa - International Journal of Modern Physics A, 2022 - World Scientific
Here, we review the most recent progress in our understanding of quantum mechanical
observables in cosmology in the perturbative regime. It relies on an approach that considers …
observables in cosmology in the perturbative regime. It relies on an approach that considers …
Snowmass white paper: the cosmological bootstrap
This white paper summarizes recent progress in the cosmological bootstrap, an approach to
the study of the statistics of primordial fluctuations from consistency with unitarity, locality and …
the study of the statistics of primordial fluctuations from consistency with unitarity, locality and …
Analyticity and unitarity for cosmological correlators
A bstract We study the fundamentals of quantum field theory on a rigid de Sitter space. We
show that the perturbative expansion of late-time correlation functions to all orders can be …
show that the perturbative expansion of late-time correlation functions to all orders can be …
From dS to AdS and back
A bstract We describe in more detail the general relation uncovered in our previous work
between boundary correlators in de Sitter (dS) and in Euclidean anti-de Sitter (EAdS) space …
between boundary correlators in de Sitter (dS) and in Euclidean anti-de Sitter (EAdS) space …
The cosmological optical theorem
H Goodhew, S Jazayeri, E Pajer - Journal of Cosmology and …, 2021 - iopscience.iop.org
The unitarity of time evolution, or colloquially the conservation of probability, sits at the heart
of our descriptions of fundamental interactions via quantum field theory. The implications of …
of our descriptions of fundamental interactions via quantum field theory. The implications of …
Snowmass white paper: the double copy and its applications
The double copy is, in essence, a map between scattering amplitudes in a broad variety of
familiar field and string theories. In addition to the mathematically rich intrinsic structure, it …
familiar field and string theories. In addition to the mathematically rich intrinsic structure, it …
The cosmological bootstrap: weight-shifting operators and scalar seeds
A bstract A key insight of the bootstrap approach to cosmological correlations is the fact that
all correlators of slow-roll inflation can be reduced to a unique building block—the four-point …
all correlators of slow-roll inflation can be reduced to a unique building block—the four-point …
Boostless cosmological collider bootstrap
GL Pimentel, DG Wang - Journal of High Energy Physics, 2022 - Springer
A bstract Cosmological correlation functions contain valuable information about the
primordial Universe, with possible signatures of new massive particles at very high energies …
primordial Universe, with possible signatures of new massive particles at very high energies …
The cosmological bootstrap: spinning correlators from symmetries and factorization
We extend the cosmological bootstrap to correlators involving massless particles with spin.
In de Sitter space, these correlators are constrained both by symmetries and by locality. In …
In de Sitter space, these correlators are constrained both by symmetries and by locality. In …
Cosmological cutting rules
S Melville, E Pajer - Journal of High Energy Physics, 2021 - Springer
A bstract Primordial perturbations in our universe are believed to have a quantum origin,
and can be described by the wavefunction of the universe (or equivalently, cosmological …
and can be described by the wavefunction of the universe (or equivalently, cosmological …