5 papers
How Primordial Black Holes Change BBN
Tianning Wang, Evan Grohs, Laura Mersini-Houghton
Primordial Black Holes (PBHs) provide a powerful probe of early-universe physics, linking inflationary fluctuations to observable cosmological phenomena. In this work, we use a bot…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
Dark Energy from Time Crystals
Laura Mersini-Houghton
In this work, we analyze a scalar field model which gives rise to stable bound states in field space characterized by nonzero motion that breaks the underlying time translation sym…
A Note on the Stability of the Dark Energy Model from Time Crystals
Laura Mersini-Houghton
In this note, we investigate the stability of the dark energy model from time crystals proposed in [1]. We emphasize two ingredients, the coupling of the scalar field to gravity, a…
The Nature of Phantom Dark Energy and its Relation to Time Crystals
Laura Mersini-Houghton
In this letter we show that, at its fundamental level, phantom dark energy is a fluid made up of time crystals that permeate the fabric of space-time. In turn, any well-behaved sta…