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 …

Abstract Models where dark matter and dark energy interact with each other have been
proposed to solve the coincidence problem. We review the motivations underlying the need …

A bstract The Swampland Distance Conjecture (SDC) states that, as we move towards an
infinite distance point in moduli space, a tower of states becomes exponentially light with the …

According to't Hooft the combination of quantum mechanics and gravity requires the three‐
dimensional world to be an image of data that can be stored on a two‐dimensional …

We review the holographic correspondence between field theories and string/M theory,
focusing on the relation between compactifications of string/M theory on Anti-de Sitter …

There is strong evidence that the area of any surface limits the information content of
adjacent spacetime regions, at 1.4× 10 69 bits per square meter. This article reviews the …

Bekenstein has proposed the bound S≤ π MP 2 L 2 on the total entropy S in a volume L 3.
This nonextensive scaling suggests that quantum field theory breaks down in large volume …

Forty years after the discovery of Hawking radiation, its exact nature remains elusive. If
Hawking radiation does not carry any information out from the ever shrinking black hole, it …

We examine how to construct a spatial manifold and its geometry from the entanglement
structure of an abstract quantum state in Hilbert space. Given a decomposition of Hilbert …

We review the present status of black hole thermodynamics. Our review includes discussion
of classical black hole thermodynamics, Hawking radiation from black holes, the generalized …