# Comment on "New variables for 1+1 dimensional gravity"

## TL;DR

This paper clarifies that the results by Gambini, Pullin, and Rastgoo are specific instances within a broader framework for canonical variables in dilaton gravity models, emphasizing the generality of the latter approach.

## Contribution

It demonstrates that previous specific results are special cases of a more general canonical variable treatment for dilaton gravity.

## Key findings

- Previous results are special cases of a general framework.
- The general treatment encompasses earlier specific models.
- Clarifies the scope of canonical variables in 1+1 dimensional gravity.

## Abstract

The results reported by Gambini, Pullin and Rastgoo in (2010 Class. Quantum Grav. 27 025002) are special cases of a general treatment of canonical variables for dilaton gravity models published in (2009 Class. Quantum Grav. 26 035018).