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Are the forces always calculated in cartesian coordinates?

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<div class="">Specifically, when the positions are given in “crystal” coordinates, are the forces in</div>

<div class="">cartesian coordinates or “crystal” coordinates?</div>

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<div class="">Thank you.</div>

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<div class="">…Murray Daw</div>

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____________________________________________________<br class="">

MURRAY S. DAW<br class="">

R. A. Bowen Professor of Physics<br class="">

Dept of Physics & Astronomy<br class="">

Clemson University<br class="">

202A Kinard Labs<br class="">

Clemson, SC 29634-0978<br class="">

Phone: (864)656-6702<br class="">

FAX: (864)656-0805<br class="">

e-mail: <a href="mailto:daw@clemson.edu" class="">daw@clemson.edu</a><br class="">

website <a href="http://daw.people.clemson.edu" class="">http://daw.people.clemson.edu</a><br class="">

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