See chapter XII of Landau's "Quantum mechanics" or any other textbook of quantum mechanics / molecular physics / condensed matter physics. If all this takes too much time, google may also help ... Stefano B
On Jun 20, 2010, at 2:33 PM, eli wrote: > dear all > in phonon calculation in output of ph.x, what is irreducible > representations? "for example 2 modes -E-2u" > Elahe Teimouri > Computational Condensed Matter Research Lab > Physics Department, Isfahan University of Technology, Isfahan, Iran > > > > _______________________________________________ > Pw_forum mailing list > Pw_forum at pwscf.org > http://www.democritos.it/mailman/listinfo/pw_forum --- Stefano Baroni - SISSA & DEMOCRITOS National Simulation Center - Trieste http://stefano.baroni.me [+39] 040 3787 406 (tel) -528 (fax) / stefanobaroni (skype) La morale est une logique de l'action comme la logique est une morale de la pens?e - Jean Piaget Please, if possible, don't send me MS Word or PowerPoint attachments Why? See: http://www.gnu.org/philosophy/no-word-attachments.html -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.democritos.it/pipermail/pw_forum/attachments/20100620/72e8d2af/attachment.htm
