Current observational constraints on cosmic doomsday

  title={Current observational constraints on cosmic doomsday},
  author={Yun Wang and Jan Michael Kratochvil and Andrei Linde and Marina V. Shmakova},
  journal={Journal of Cosmology and Astroparticle Physics},
In a broad class of dark energy models, the universe may collapse within a finite time tc. Here we study a representative model of dark energy with a linear potential, V () = V0(1+α). This model is the simplest doomsday model, in which the universe collapses rather quickly after it stops expanding. Observational data from type Ia supernovae (SNe Ia), cosmic microwave background anisotropy (CMB), and large scale structure (LSS) are complementary in constraining dark energy models. Using the new… 

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