Report summary

The 2015-2017 picture for Harvard University Department of Physics is a 57-PI network with 44 internal PI collaborations. The main research signal is Physics and Astronomy as the leading field (37% of slots across 36 PIs; 36 labels), Atomic and Molecular Physics, and Optics as the leading subfield (18% of slots across 22 PIs; 22 labels), and Black Holes and Theoretical Physics as the leading topic (6% of slots across 10 PIs; 10 labels). This is a solid, readable collaboration map: group-level fit matters more than a single department-wide label. The leading PI names are David A. Weitz (40.6 weighted works; Innovative Microfluidic and Catalytic Techniques Innovation, 3D Printing in Biomedical Research). The clearest collaboration lines are Marko Lončar and Eric Mazur (10 shared works, weight 5); Mikhail D. Lukin and Hongkun Park (11 shared works, weight 4.7). The leading breakdown groups are group 1 with 10 PIs, 11 internal connections, weight 24.2, around Atomic and Molecular Physics, and Optics, Materials Chemistry, Condensed Matter Physics, led by Marko Lončar, Mikhail D. Lukin, Eric Mazur.