Sourcing dark matter and dark energy from α-attractors

In [1], Kallosh and Linde drew attention to a new family of supercon irmal inflationary potentials, subsequently called cv-attractors 121. The alpha-alltractor family can interpolate between a large class of inflationary models. It also has an important theoretical underpinning within the framework of supergravity. We demonstrate that the a-attractors have an even wider appeal since they may describe dark matter and perhaps even dark energy. The dark matter associated with the cy-attractors, which we call ct-dark matter (aDM), shares many of the attractive features of jazzy dark matter, with V(phi) = 1/2 m(2)phi(2), while having none of its drawbacks. Like fuzzy dark matter, alpha DM can have a large Jeans length which could resolve the cusp -core and substructure problems faced by standard cold dark matter. aDM also has an appealing tracker property which enables it to converge to the late -time dark matter asymptote, < w > similar or equal to 0, from a wide range of initial conditions. It thus avoids the enormous fine-tuning problems faced by the m(2)phi(2) potential in describing dark matter.