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---
description: How to optimize the geometry under constrained polarization
authors: MT
---
<!--- This is the source file for this topics. Can be edited. -->
This page gives hints on how to optimize the geometry under constrained polarization with the ABINIT package.
## Introduction
Compute polarization in cartesian coordinates, and update lattice constants
and atomic positions in order to perform a structural optimization at
constrained polarization, following the formalism described in Na Sai et al,
PRB 66, 104108 (2002). More details in [[anaddb:polflag]]. The geometry
optimization is done in ANADDB.
## Related Input Variables
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## Selected Input Files
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