<div style="font-family: 'Times New Roman'; font-size: 16px;">Dear Molpro-users,<br _moz_dirty="" />
<br _moz_dirty="" />
I have calculated the expectation value of the spatial extent of excited state using EOM-CCSD method <br _moz_dirty="" />
(using the subcommand expec, qmrr) and found to be a -ve value. But since this is the expectation value <br _moz_dirty="" />
of a square quantity (<r^2>) it should be a +ve value. <br _moz_dirty="" />
<br _moz_dirty="" />
Can anybody please tell me what this -ve sign means?<br _moz_dirty="" />
<br _moz_dirty="" />
Regards,<br _moz_dirty="" />
<br _moz_dirty="" />
Tanmoy Mondal<br _moz_dirty="" />
School of Chemistry<br _moz_dirty="" />
University of Hyderabad<br _moz_dirty="" />
Hyderabad, INDIA </div>