We review recent developments on nonrelativistic string theory. In flat spacetime, the theory
is defined by a two-dimensional relativistic quantum field theory with nonrelativistic global …

This study reviews the history of Newton–Cartan (NC) gravity with an emphasis on recent
developments, including the covariant, off-shell large speed of light expansion of general …

A bstract We study the non-relativistic expansion of general relativity coupled to matter. This
is done by expanding the metric and matter fields analytically in powers of 1/c 2 where c is …

A bstract Non-relativistic string theories promise to provide simpler theories of quantum
gravity as well as tractable limits of the AdS/CFT correspondence. However, several …

A bstract We discuss a particular non-relativistic limit of NS-NS gravity that can be taken at
the level of the action and equations of motion, without imposing any geometric constraints …

We derive an action whose equations of motion contain the Poisson equation of Newtonian
gravity. The construction requires a new notion of Newton-Cartan geometry based on an …

Nonrelativistic string theory is described by a sigma model with a relativistic worldsheet and
a nonrelativistic target spacetime geometry, that is called string Newton–Cartan geometry. In …

A bstract We study the bosonic sector of a decoupling limit of type IIA superstring theory,
where a background Ramond-Ramond one-form is fined tuned to its critical value, such that …

We review different exact approaches to string theory. In the context of the Green–Schwarz
superstring, we discuss the action in curved backgrounds and its supercoset formulation …

A bstract We revisit the formulation of non-relativistic (NR) string theory and its target space
geometry. We obtain a new formulation in which the geometry contains a two-form field that …