Hi everyone, I'm interested in calculating the infrared transition intensity (and LO/TO) splitting of some phonons. The SIESTA manual says that there is a version of the Vibra utility that has these features (provided you calculate the Born effective charges along with force constants). There is an email address provided for questions about obtaining this version of Vibra, but I haven't had a response to the message I sent there. Is there another way of obtaining this program? Thanks very much,
Mike
