Exciton analysis after TD-DFT (using ALDA)

Anything regarding the post-processing utility (e.g. excitonic wavefunction analysis) is dealt with in this forum.

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Daniele Varsano
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Re: Exciton analysis after TD-DFT (using ALDA)

Post by Daniele Varsano » Tue Jul 14, 2026 8:12 am

Dear Vipul,

please note that the electron/hole average density is defined in the unit cell so it will not provide information on the exciton localization in bulk systems.
I do not know if it is implemented in yambopy, anyway you can safely reduce the FFT in ypp. You will have a coarser real space grid but then interpolation can be done using standard plotting tools.

Best,
Daniele
Dr. Daniele Varsano
S3-CNR Institute of Nanoscience and MaX Center, Italy
MaX - Materials design at the Exascale
http://www.nano.cnr.it
http://www.max-centre.eu/

harrier_class
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Joined: Tue May 13, 2025 4:27 pm

Re: Exciton analysis after TD-DFT (using ALDA)

Post by harrier_class » Tue Jul 14, 2026 9:34 am

Dear Daniele,

Thanks for your reply.

Yes, I reduced the FFTGrid value and could get the plots. Thanks.

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Best regards,
Vipul
Vipul Kumar Ambasta
MSc. student
Friedrich Alexander Universitaet
Erlangen (Germany)

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