2 papers
astro-ph2004
On the Gravitational Field of Antimatter
Eduard Masso, Francesc Rota
The gravitational field of matter and that of antimatter could differ. This might be one signature of quantum gravity. We show that primordial Big Bang Nucleosynthesis restricts su…
hep-ph2004
Planck-Scale Effects on Global Symmetries: Cosmology of Pseudo-Goldstone Bosons
Eduard Masso, Francesc Rota, Gabriel Zsembinszki
We consider a model with a small explicit breaking of a global symmetry, as suggested by gravitational arguments. Our model has one scalar field transforming under a non-anomalous…