Can Dark Matter be an artifact of extended theories of gravity

摘要: In this article, we propose different background models of extended theories gravity, which are minimally coupled to the SM fields, explain possibility genesis dark matter without affecting particle sector. We modify gravity sector by allowing quantum corrections motivated from (1) local $f(R)$ and (2) non-minimally with dilaton field. Next apply conformal transformation on metric transform action back Einstein frame. also show that an effective theory constructed these looks exactly same. Using relic constraint observed Planck 2015, constrain scale field ($\Lambda_{UV}$) as well mass ($M$). consider two cases- light (LDM) heavy (HDM), deduce upper bounds thermally averaged cross section annihilating particles. Further our model naturally incorporates self interactions matter. interactions, derive constraints parameters interaction. Finally, some UV complete a physics point view, can give rise same have deduced gravity.