Besides his work on particle physics and the International Linear Collider, he has since 2003 made numerous efforts in fighting institutions which are considered to be diploma mills, which has caused him to receive significant public attention.

[1] Gollin has worked on particle physics experiments studying muon scattering (1975–1981, intended to test the ideas of "Quantum Chromodynamics"), neutral K meson decay parameters (1980–1993, measuring things relating to "CP violation"), and electron-positron annihilation (1993–2005, measuring production and decay properties of heavy quarks).

His teaching has spanned the entire physics curriculum, from elementary algebra-based courses for students in the life sciences to classical electrodynamics at the graduate level.

[2] Since 2003, Gollin has been documenting the practices of alleged diploma mills, which are believed to sell meaningless academic degrees without providing education or assessment to/of their customers.

[3][4] It was reported in The Chronicle of Higher Education that "Alan Contreras, administrator for the Oregon Office of Degree Authorization, called the professor's work 'superb'.