Phase evolution in spatial dark states

Phase-Space Evolution of Dark Matter Halos

Context. In a Universe dominated by dark matter, halos are continuously accreting mass (violently or not) and such mechanism affects their dynamical state. Aims. The evolution of dark matter halos in phase-space, and using the phase-space density indicator Q = ρ/σ as a tracer, is discussed. Methods. We have performed cosmological N-body simulations from which we have carried a detailed study of...

In dark analysis of PVA/AA materials at very low spatial frequencies: phase modulation evolution and diffusion estimation.

Molecular diffusion effects have been widely studied inside photopolymers for holographic applications. Recently some works have focused on low spatial frequencies to evaluate in real time the monomer diffusion effects. Assuming a Fermi-Dirac function-based profile, we have fitted the diffracted intensities, reflected and transmitted (up to the 8th order), to obtain the phase and surface profil...

Stellar Structure of Dark Stars: a first phase of Stellar Evolution due to Dark Matter Annihilation

Dark Stars are the very first phase of stellar evolution in the history of the universe: the first stars to form (at redshifts z ∼ 10 − 50) are powered by dark matter annihilation instead of fusion (if the dark matter is made of particles which are their own antipartners). We find equilibrium polytropic configurations for these stars; we start from the time DM heating becomes important (M ∼ 1 −...

Stellar Structure of Dark Stars: a First Phase of Stellar Evolution Resulting from Dark Matter Annihilation

Dark Stars are the very first phase of stellar evolution in the history of the universe: the first stars to form (at redshifts z ∼ 10 − 50) are powered by heating from dark matter (DM) annihilation instead of fusion (if the DM is made of particles which are their own antiparticles). We find equilibrium polytropic configurations for these stars; we start from the time DM heating becomes importan...

Collective entangled dark states