<div dir="ltr"><div dir="ltr">On Mon, Mar 29, 2021 at 6:54 PM Jessica Johnson <<a href="mailto:jj611@soe.rutgers.edu">jj611@soe.rutgers.edu</a>> wrote:</div><div dir="ltr"><br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)"><span style="margin:0px;color:rgb(77,77,77);font-family:Arial,Helvetica,sans-serif;font-size:14px;text-align:left;background-color:rgb(255,255,255)">I understood that anharmonicity is taken into account
with the inclusion of second and third order energy derivatives.</span></div></blockquote><div><br></div><div>anharmonicity "may" be taken into account with the inclusion <span style="margin:0px;color:rgb(77,77,77);font-family:Arial,Helvetica,sans-serif;font-size:14px;text-align:left;background-color:rgb(255,255,255)">of second and third order energy derivatives, but in order to reach such goal, additional calculations - and not simple ones - are needed</span></div><div><span style="margin:0px;color:rgb(77,77,77);font-family:Arial,Helvetica,sans-serif;font-size:14px;text-align:left;background-color:rgb(255,255,255)"><br></span></div><div><span style="margin:0px;color:rgb(77,77,77);font-family:Arial,Helvetica,sans-serif;font-size:14px;text-align:left;background-color:rgb(255,255,255)">Paolo<br></span></div></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,<br>Univ. Udine, via delle Scienze 206, 33100 Udine, Italy<br>Phone +39-0432-558216, fax +39-0432-558222<br><br></div></div></div></div></div></div>