In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

The Berry phase is almost never present in it, with the exception of the "JT valley" caused by the Jahn-Teller effect, and it fails for graphenes, due to rigid oscillations of Dirac cones and a stiffening of the Raman G peak. Its first step consists of solving the time-independent Schrodinger Equation to obtain namesake potential energy surfaces, which can be used to determine nuclear eigenvalues, while Eckart conditions are used in its second step. The Franck-Condon principle assumes that the vibrational and electronic wavefunctions are separate in, FTP, this physical approximation used to model molecular dynamics, which assumes nuclei do not move in relation to electrons and is named for two physicists.
Science