Jackiw–Teitelboim gravity, also known as the ''R'' = ''T'' model, or simply JT gravity (after physicists
Roman Jackiw and
Claudio Teitelboim), is a theory of gravity with
dilaton coupling in one spatial and one time dimension. It should not be confused with the
CGHS model or
Liouville gravity. The action is given by
:
The metric in this case is more amenable to analytical solutions than the general 3+1D case though a canonical reduction for the latter has recently been obtained.
For example, in 1+1D, the metric for the case of two mutually interacting bodies can be solved exactly in terms of the
Lambert W function, even with an additional electromagnetic field.
Varying with respect to Φ yields
on shell, which means the metric is either
Anti-de Sitter space or
De Sitter space, depending upon the sign of Λ.
See also
References
Theory of relativity
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