How to get components of an arbitrary defined tensor field in xCoba

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Amir Hadi Ziaie

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Jul 24, 2015, 11:18:27 AM7/24/15

to xAct Tensor Computer Algebra

Hello every body

I have attached a math file in which I tried to get the components of Brans-Dicke equations of motions in the Schwarzschild background, but I failed to compute them.

Is there anyone who kindly let me know what is the problem?

My best regards

Hadi

BDaction+xCoba.nb

ghadir jafari

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Aug 6, 2015, 2:27:35 PM8/6/15

to xAct Tensor Computer Algebra

Hi Dear Amir

See your edited notebook. Just add one other //ToBasis[B] and a //TraceBasisDummy.

BDaction+xCoba1.nb

Amir Hadi Ziaie

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Jul 19, 2016, 8:20:51 AM7/19/16

to xAct Tensor Computer Algebra

Dear Ghadir

Many thanks for your helpful comment.

My best regards

Hadi

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