Brane-like singularities with no brane

Understand

We use a method of linearization to study the emergence of the future cosmological singularity characterized by finite value of the cosmological radius.

• We uncover such singularities that keep Hubble parameter finite while making all higher derivatives of the scale factor (starting out from the $\ddot a$) diverge as the cosmological singularity is approached.
• Since such singularities has been obtained before in the brane world model we name them the "brane-like" singularities.
• These singularities can occur during the expanding phase in usual Friedmann universe filled with both a self-acting, minimally coupled scalar field and a homogeneous tachyon field.