Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: De Sitter Space and the Swampland   It has been notoriously difficult to construct a meta-stable de Sitter (dS)
vacuum in string theory in a controlled approximation. This suggests the
possibility that meta-stable dS belongs to the swampland. In this paper, we
propose a swampland criterion in the form of $|\nabla V|\geq\ c \cdot V$ for a
scalar potential $V$ of any consistent theory of quantum gravity, for a
positive constant $c$. In particular, this bound forbids dS vacua. The
existence of this bound is motivated by the abundance of string theory
constructions and no-go theorems which exhibit this behavior. We also extend
some of the well-known no-go theorems for the existence of dS vacua in string
theory to more general accelerating universes and reinterpret the results in
terms of restrictions on allowed scalar potentials.

8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph