Higher Spin Dark Matter

TL;DR: This review integrates string theory with cosmology, exploring its applications from primordial times to the present-day accelerated expansion, covering moduli stabilisation, inflation, dark energy, and novel particle possibilities with implications for CMB, gravitational waves, and dark matter.

TL;DR: In this article , it was shown that the effective nonrelativistic theory of gravitationally interacting, massive integer-spin fields (spin-0, 1, and 2 in particular) is described by a $2s+1$ component Schrodinger-Poisson action, where $s$ is the spin of the field.

TL;DR: In this paper, an effective theory for a massive spin-S$ particle is defined in terms of on-shell amplitudes, which are written down using the massive spinor formalism.

TL;DR: In this article , it was shown that oscillons also exist in the low-energy effective theory of an interacting massive (real) vector field, and two types of vector oscillons with vanishing orbital angular momentum, and approximately spherically symmetric energy density, but not field configurations.

TL;DR: In this paper, the cosmological parameter results from the final full-mission Planck measurements of the CMB anisotropies were presented, with good consistency with the standard spatially-flat 6-parameter CDM cosmology having a power-law spectrum of adiabatic scalar perturbations from polarization, temperature, and lensing separately and in combination.

TL;DR: In this article, it was shown that the relationship between event horizons and thermodynamics can be extended to cosmological models with a repulsive cosmology constant, and that the spacetime metric itself appears to be observer-dependent.

TL;DR: Investigation of chaotic inflation models with two scalar fields, such that one field (the inflaton) rolls while the other is trapped in a false vacuum state, finds that false vacuum inflation occurs with the inflaton field far below the Planck scale, making it easier to implement in the context of supergravity than standard chaotic inflation.

TL;DR: In this article, a new theorem on the impossibility of combining space-time and internal symmetries in any but a trivial way was proved, which is applicable to infinite-parameter groups, instead of just to Lie groups.