2 papers
astro-ph.CO2026
Dark Energy Bubble as Dynamical Dark Energy: Properties and CMB Constraints
Batia Friedman-Shaw, Matthew C. Johnson, Katherine J. Mack
Recent DESI results are in tension with the constant dark energy density predicted by the CDM model. If dark energy is associated with the vacuum energy of a scalar field in a…
hep-th2026
Evidence for renormalized instantons in real-time simulations of vacuum decay
Emilie Hertig, Alexander C. Jenkins, Hiranya V. Peiris +2
While vacuum decay is traditionally described by Euclidean instanton methods, lattice simulations enable real-time modeling of dynamical observables relevant to cosmology and upcom…