Sabrina Gonzalez Pasterski aka Physics girl  This is a real world physicist born in 1993 (RP age in 2025 is 32).  She works with high energy physics an Harvard, dabbling in gravity waves and black holes.  She has been touted as the next Einstein.  She was the first female physicist to have work authored only by her cited on a paper by Stephen Hawking.

http://physicsgirl.com

Top 20 Living Physicists  Pay special note to #2, Freeman Dyson.  Bear in mind these guys are 8 years older.  Some may no longer be alive.  Some may no longer be functional and their work picked up by others.

http://www.aneki.com/top_living_physicists.html

Some Fictional Physicists
Duncan Moran - Applied physicist.  Lives in Albuquerque, NM and works as a consultant to Sandia Labs (Weapons Systems) and NASA.  His work is in fusion and nanotechnology.  He dabbles with EM drive and Warp Drive, not that we are going to go out and build the Enterprise anytime soon.  He can be very difficult to locate as he travels a lot.  His work is often military and classified.  You will need credentials and clearance with his Staff and Security.  (I'll be running this one.)