13 citations · 13 across the 1 of their papers we have counts for
3 papers
The Massive Flat Space Limit of Cosmological Correlators
Sebastian Cespedes, Sadra Jazayeri
Identifying useful flat-space limits for cosmological correlators, where they can be expressed in terms of observables in Minkowski space is nontrivial due to their scale-invariant…
as an Effective Theory in de Sitter
Sebastian Cespedes, Zhehan Qin, Dong-Gang Wang
Effective field theories (EFTs) provide a powerful framework to parametrise unknown aspects of possible ultraviolet (UV) physics. For scalar fields in de Sitter space, however, new…
Cosmology, Decoherence and the Second Law
Sebastian Cespedes, Senarath de Alwis, Fernando Quevedo
We consider quantum decoherence and entropy increase in early universe cosmology. We first study decoherence in a discrete bipartite quantum system for which a single qubit gets en…