Re: [Pw_forum] Relaxation of coordinates in TDDFT

2016-12-22 Thread Timrov Iurii
Dear Andreas,


It is not possible to relax atomic coordinates in excited state with the TDDFPT 
package.


Best regards,

Iurii


--
Dr. Iurii Timrov
Postdoctoral Researcher
Swiss Federal Institute of Technology Lausanne (EPFL)
Laboratory of Theory and Simulation of Materials (THEOS)
CH-1015 Lausanne, Switzerland


From: pw_forum-boun...@pwscf.org  on behalf of 
Andreas Röckert 
Sent: Wednesday, December 21, 2016 8:24 PM
To: pw_forum@pwscf.org
Subject: [Pw_forum] Relaxation of coordinates in TDDFT

Hi All,

I have used TDDFT in Quantum espresso to estimate the charge density response, 
however i need to relax my atomic coordinates in excited state (i.e in the 
presence of time dependent fields).
I was wondering if TDDFPT or any other package of Quantum espresso is able to 
do that?
Do you have any suggestions for me?

Thanks
Andreas

Chemistry department
Uppsala university
___
Pw_forum mailing list
Pw_forum@pwscf.org
http://pwscf.org/mailman/listinfo/pw_forum

Re: [Pw_forum] Relaxation of coordinates in TDDFT

2016-12-22 Thread Paolo Giannozzi
I think CPMD can do MD on excited-state surfaces

Paolo

On Thu, Dec 22, 2016 at 9:43 AM, Timrov Iurii  wrote:
> Dear Andreas,
>
>
> It is not possible to relax atomic coordinates in excited state with the
> TDDFPT package.
>
>
> Best regards,
>
> Iurii
>
>
> --
> Dr. Iurii Timrov
> Postdoctoral Researcher
> Swiss Federal Institute of Technology Lausanne (EPFL)
> Laboratory of Theory and Simulation of Materials (THEOS)
> CH-1015 Lausanne, Switzerland
>
> 
> From: pw_forum-boun...@pwscf.org  on behalf of
> Andreas Röckert 
> Sent: Wednesday, December 21, 2016 8:24 PM
> To: pw_forum@pwscf.org
> Subject: [Pw_forum] Relaxation of coordinates in TDDFT
>
> Hi All,
>
> I have used TDDFT in Quantum espresso to estimate the charge density
> response, however i need to relax my atomic coordinates in excited state
> (i.e in the presence of time dependent fields).
> I was wondering if TDDFPT or any other package of Quantum espresso is able
> to do that?
> Do you have any suggestions for me?
>
> Thanks
> Andreas
>
> Chemistry department
> Uppsala university
>
> ___
> Pw_forum mailing list
> Pw_forum@pwscf.org
> http://pwscf.org/mailman/listinfo/pw_forum



-- 
Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
Phone +39-0432-558216, fax +39-0432-558222

___
Pw_forum mailing list
Pw_forum@pwscf.org
http://pwscf.org/mailman/listinfo/pw_forum

[Pw_forum] Dudarev DFT+U version

2016-12-22 Thread evan
Hello, Q.E. users

Is the DFT+U scheme (lda_plus_u_kind = 0) similar to the Dudarev DFT+U version 
(simplified rotational invariant, PRB, 57, 1505), which means whether the U 
term (lda_plus_u_kind = 0) is an effective U (that is, U_eff = U-J) or not?

Thank you in advance.

Evan

USC, China___
Pw_forum mailing list
Pw_forum@pwscf.org
http://pwscf.org/mailman/listinfo/pw_forum

[Pw_forum] Quantum ESPRESSO Developers Meeting 2017 (plus details to attend in live streaming!)

2016-12-22 Thread Filippo SPIGA
Dates
Monday January 9th, 2017 (full day) and Tuesday January 10th, 2017 (half day)

Location
Kastler Lecture Hall, Adriatico Guest House, ICTP (Italy)

Agenda

Monday January 9th

09:00 - 09:30   Opening talk
Paolo Giannozzi (U.Udine)

09:30 - 09:50   New XML I/O in QE
Pietro Delugas (SISSA)

09:50 - 10:10   New FFT data distribution to improve scalability,
Stefano de Gironcoli (SISSA)

10:10 - 10:30   Diagonalization algorithms with reduced subspace diagonalization
Anoop Chandran (ICTP / MHPC student)

10:30 - 11:00   Break

11:00 - 11:20   Status report on AiiDA, and the Materials Cloud portal for QE 
data
Nicola Marzari (EPFL)

11:20 - 11:50   Quantum Espresso enabling on Marconi
Fabio Affinito (CINECA)

11:50 - 12:20   Optimizing EXX calculations in QE for Intel Xeon Phi
Thorsten Kurth/Taylor Barnes (NERSC)

12:20 - 13:00   Discussions

13:00 - 14:00   Lunch

14:00 - 14:20   Progress in EPW and discuss test-farm & automatic documentation
Samuel Ponce (U.Oxford)

14:20 - 14:40   Using QE as a library: Lessons learned by developing the 
Sternheimer GW code
Martin Schlipf (U.Oxford)

14:40 - 15:00   thermo_pw: a Fortran driver for the quantum ESPRESSO routines
Andrea Dal Corso (SISSA)

15:00 - 15:20   WEST: large-scale excited states calculations
Marco Govoni (U.Chicago)

15:30 - 17:30   Discussions

Tuesday January 10th

09:30 - 09:50   DFT and DFPT for two-dimensional systems: implementation of 2D 
Coulomb cutoff in PW and PH
Thibault Sohier (EPFL)

09:50 - 10:10   Hubbard interactions from density functional perturbation theory
Iurii Timrov (EPFL)

10:10 - 10:30   New development in exact exchange calculations
Ivan Carnimeo (SISSA)

10:30 - 11:00   Break

11:00 - 11:20   Magnetic excitations
Tommaso Gorni (SISSA)

11:30 - 13:00   Discussions

13:00 - 14:00   Lunch


Recordings
All talks will be first broadcasted via YouTube streaming (see links below) and 
then all recordings uploaded in a separate YouTube channel. Discussions will 
not be recorded.

Monday morning   from 09:00 to 10:20 = https://youtu.be/xE4hOlt-LXY

Monday morning   from 11:00 to 12:20 = https://youtu.be/lpR91QQApMU

Monday afternoon from 14:00 to 15:20 = https://youtu.be/6ghwf3bxtA4

Tuesday morning  from 09:30 to 10:30 = https://youtu.be/d-rNgX7uhW4

Tuesday morning  from 11:00 to 11:20 = https://youtu.be/Q8nHysyUIoY

Social media
Follow Quantum ESPRESSO on Facebook [1] and Twitter [2] and LinkedIn [3]


A big thank you to Ivan Girotto (ICTP) and all ICTP staff for hosting the 
event, the technical support (especially for the streaming) and the logistics.

[1] https://www.facebook.com/QuantumESPRESSO/
[2] https://twitter.com/QuantumESPRESSO
[3] https://www.linkedin.com/groups/4650183

--
Filippo SPIGA ~ Quantum ESPRESSO Foundation ~ http://www.quantum-espresso.org

___
Pw_forum mailing list
Pw_forum@pwscf.org
http://pwscf.org/mailman/listinfo/pw_forum

[Pw_forum] file formats of p_avg.dat

2016-12-22 Thread Chong Wang
Hi everyone,


I am told that band.x program can output momentum matrix elements. However, I 
cannot make sense of the output file p_avg.dat. For example, I think momentum 
matrix elements should be generally complex, but I see no such indications in 
the output file. So, what's the format of p_avg.dat?


Best!


Chong Wang

Institute for Advanced Study, Tsinghua University.
___
Pw_forum mailing list
Pw_forum@pwscf.org
http://pwscf.org/mailman/listinfo/pw_forum