A number of challenges to the standard Λ CDM model have been emerging during the past
few years as the accuracy of cosmological observations improves. In this review we discuss …

The Swampland program aims to determine the constraints that an effective field theory must
satisfy to be consistent with a UV embedding in a quantum gravity theory. Different …

The Swampland program aims to distinguish effective theories which can be completed into
quantum gravity in the ultraviolet from those which cannot. This article forms an introduction …

Among Swampland conditions, the distance conjecture characterizes the geometry of scalar
fields and the de Sitter conjecture constrains allowed potentials on it. We point out a …

The recent result of the Dark Energy Spectroscopic Instrument (DESI) in combination with
other cosmological data shows evidence of the evolving dark energy parametrized by the w …

The swampland is the set of seemingly consistent low-energy effective field theories that
cannot be consistently coupled to quantum gravity. In this review we cover some of the …

We study aspects of anti-de Sitter space in the context of the Swampland. In particular, we
conjecture that the near-flat limit of pure AdS belongs to the Swampland, as it is necessarily …

A bstract The Distance Conjecture holds that any infinite-distance limit in the scalar field
moduli space of a consistent theory of quantum gravity must be accompanied by a tower of …

A bstract It has been conjectured that in theories consistent with quantum gravity infinite
distances in field space coincide with an infinite tower of states becoming massless …

An important unsolved problem that affects practically all attempts to connect string theory to
cosmology and phenomenology is how to distinguish effective field theories belonging to the …