Phantom-divide crossing and suppressed structure growth in kinetically braided dark energy with momentum exchange

Masroor C. Pookkillath, Shinji Tsujikawa

We construct a linearly stable scalar-field model that realizes both an upward crossing of the dark-energy equation of state, from $w_{\mathrm{DE}}<-1$ to $w_{\mathrm{DE}}>-1$, and weakened…