We review the advanced version of the KKLT construction and pure de Sitter supergravity,
involving a nilpotent multiplet, with regard to various conjectures that de Sitter state cannot …

We perform a Markov Chain Monte Carlo analysis of a simple yet generic multifield inflation
model characterized by two scalar fields coupled to each other and nonminimally coupled to …

Primordial black holes (PBHs) provide an exciting prospect for accounting for dark matter. In
this paper, we consider inflationary models that incorporate realistic features from high …

Over the last few years, a large family of cosmological attractor models has been discovered,
which can successfully match the latest inflation-related observational data. Many of these …

A bstract The Swampland Distance Conjecture (SDC) constraints the dynamics emerging at
infinite distances in field space of any effective field theory consistent with quantum gravity. It …

A bstract We study the imprint of higher spin supermultiplets on cosmological correlators,
namely the non-Gaussianity of the cosmic microwave background. Supersymmetry is used …

We study gravitational particle production of the massive spin-3/2 Rarita-Schwinger field,
and its close relative, the gravitino, in Friedmann-Robertson-Walker cosmological …

A bstract Early Dark Energy (EDE) is a prominent model to resolve the Hubble tension,
which employs a dynamical axion with a periodic potential. In this work, we take first steps …

We study a particular version of the theory of cosmological α-attractors with α= 1/3, in which
both the dilaton (inflaton) field and the axion field are light during inflation. The kinetic terms …

The late-time behavior of our universe is one of accelerated expansion, or that of a de Sitter
space, and therefore motivates us to look for time-dependent backgrounds. Finding such …