[salmon-user:00300] Maxwell+TDDFT outputs: definition of E_em[a.u./vol] and E_abs[a.u./vol]

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Sruthil Lal S.B.

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Jun 5, 2024, 10:42:04 AM6/5/24
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Dear Salmon users and developers,

This is related to the Exercise-7: Pulsed-light propagation through a silicon thin film in the Salmon User's manual. The output file  Si_RT_Ac/Si_Ac_yyyyyy.data of the Maxwel+TDDFT calculation of Si lists various quantities  at different time steps as function of spatial position.

The last two columns of the file, that is 16:E_em[a.u./vol] 17:E_abs[a.u./vol], gives E_em and E_abs, which are unfortunately not defined in the header of the file. Are they electromagnetic  energies in the interaction as discussed in Fig. 1 (attached) of the publication K. Yabana et al.: Phys. Rev. B 85, 045134 (2012)? Can you provide a description of these outputs?

image.png

Thanks in advance,
-Sruthil Lal SB

---

Sruthil Lal S.B 
Research Scholar, Room No:201, Department of Physics, Pondicherry University, R.V. Nagar, Kalapet, Puducherry, 605014

Email  : getsr...@gmail.com, Phone : +919745478929, +919941053980
Website: https://journalofaphd.github.io

Yamada Shunsuke

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Jun 5, 2024, 10:45:31 PM6/5/24
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Dear Sruthil Lal SB-san,

 

Sorry for the inconvenience.

Yes, the 17th column E_abs is the absorbed energy of the electron system as depicted in that figure.

The 16th column E_em is the energy of the electromagnetic field, (E^2+B^2)/(8*pi).

 

Sincerely,

Shunsuke

 

差出人: Sruthil Lal S.B. <getsr...@gmail.com>
日付: 水曜日, 202465 23:44
宛先: salmo...@salmon-tddft.jp <salmo...@salmon-tddft.jp>
件名: [salmon-user:00300] Maxwell+TDDFT outputs: definition of E_em[a.u./vol] and E_abs[a.u./vol]

Dear Salmon users and developers,

 

This is related to the Exercise-7: Pulsed-light propagation through a silicon thin film in the Salmon User's manual. The output file  Si_RT_Ac/Si_Ac_yyyyyy.data of the Maxwel+TDDFT calculation of Si lists various quantities  at different time steps as function of spatial position.

 

The last two columns of the file, that is 16:E_em[a.u./vol] 17:E_abs[a.u./vol], gives E_em and E_abs, which are unfortunately not defined in the header of the file. Are they electromagnetic  energies in the interaction as discussed in Fig. 1 (attached) of the publication K. Yabana et al.: Phys. Rev. B 85, 045134 (2012)? Can you provide a description of these outputs?

 

 

Sruthil Lal S.B.

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Jun 6, 2024, 12:59:39 AM6/6/24
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Dear Shunsuke,

Thank you for your clarification!

-Sruthil
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