In most states, the birth mother can name her child anything she choses, almost anything goes. Thi first, middle, and last names. And you don't have to give the baby the last name of either parent , that is Judeo-Christian tradition , many cultures children have their own separate identity.-- for example, Mary Black and John Smith can name their child Morning Dew., or Morning Dew Black or Morning Dew Smith-Black An example of that truth is hyphenated last names, .just like tyou do not have to have a middle name
Searching the code for a law that doesn't exist is time consuming, I could find no such "law", What I think your friend(s) meant is that EITHER parent can change their child's name . He would have to petition for aname change and you can object. Then a judge will decide. Some judges are old fashioned and think children should have their fathers last name.
A defense to that is that the father isn't very old fashioned ( traditional) if he is not married to the mother.
If there is no traditional family, I see no reason to follow some traditions and not others. If there is not an intact unit, living together where the father is assuming the role of real parent, then sometimes the child is better off with his last name matching the mothers. Especially for travel, school enrollment, doctors, etc and especially passports. It will get tiresome for the custodiual parent to have to carry around a birthcertifcate to rpoev that child is her ( or his shoudl the situation be reversed) because the last names don't match up. Matching identity is critical in post 911 America
here is a link to the Ga process of name change he will utilize.
http://lawdigest.uslegal.com/name-change/general/1418/



