Dark Energy

• Ignorance parameterized
  • from Scolnic+ 2018: w₀ vs matter and w_a vs w₀
  • from Kowalski et al 2008: w evolution,
  w vs matter, w₀ vs w_a (Betoule+ 2014)
• Coincidences: cosmic epochs in perspective
• Dark energy as a field

Dark Energy as Phantom Energy

• unhealthy consequences explained and foretold here and here