Note on single-field inflation and the swampland criteria

The recently proposed swampland criteria aim to evade any (meta-) stable de Sitter constructions within string landscapes, making it difficult to accommodate accelerating phases, like dark energy domination and inflationary epoch, in cosmology. In this note, we analyze the status of various models of single-field slow-roll inflation given the old as well as the refined swampland conjectures, which constrain the form of scalar potentials in any low-energy effective field theory residing in the landscapes. In particular, we note that warm inflation turns out to be the most befitting scenario as long as lifting the tensions with swampland criteria is concerned.