Jacob Bourjaily - Associate Professor - Faculty - CFT Director
Office: 321A Osmond Laboratory
Address: 104 Davey Laboratory University Park, PA 16802 US
Email: bourjaily@psu.edu
Phone: +1 814 865 7533

I began my career in science as an undergraduate studying physics and mathematics at the University of Michigan. Upon graduation, I took up a Marshall Scholarship to pursue a degree in Mathematics at Cambridge University before starting doctoral work at Princeton University, where I earned my PhD in 2011 under the supervision of Nima Arkani-Hamed at the Institute for Advanced Study, writing a thesis on Quantum Field Theory and the Analytic S-Matrix.

After Princeton, I was elected to the Harvard Society of Fellows, where I spent several years working on what would become the book, Grassmannian Geometry of Scattering Amplitudes, published by Cambridge University Press.

I moved to Copenhagen in 2014 to join the faculty at the Niels Bohr International Academy of the University of Copenhagen, where I still maintain an affiliation. While in Copenhagen, my work earned support from the Villum Foundation and the European Research Council, allowing me to recruit and collaborate with a number of outstanding researchers (see below).

I took up my current position at Penn State in 2020, and am looking forward to many exciting years here.


  1. Nima Arkani-Hamed, Jacob Bourjaily, Freddy Cachazo, Alexander Goncharov, Alexander Postnikov, Jaroslav Trnka, "Grassmannian Geometry of Scattering Amplitudes." (2016)
  2. Jacob Bourjaily, Simon Caron-Huot, Jaroslav Trnka, "Dual-Conformal Regularization of Infrared Loop Divergences and the Chiral Box Expansion." JHEP 01 (2015)
  3. Jacob Bourjaily, Jaroslav Trnka, "Local Integrand Representations of All Two-Loop Amplitudes in Planar SYM." JHEP 8 (2015)
  4. Jacob Bourjaily, Paul Heslop, Vuong-Viet Tran, "Amplitudes and Correlators to Ten Loops Using Simple, Graphical Bootstraps." JHEP 11 (2016)
  5. Jacob Bourjaily, Andrew McLeod, Matt Hippel, Matthias Wilhelm, "A (Bounded) Bestiary of Feynman Integral Calabi-Yau Geometries." Phys. Rev. Lett. 122 3 (2019)
  6. Jacob Bourjaily, Enrico Herrmann, Cameron Langer, Andrew McLeod, Jaroslav Trnka, "All-Multiplicity Nonplanar Amplitude Integrands in Maximally Supersymmetric Yang-Mills Theory at Two Loops." Phys. Rev. Lett. 124 11 (2020)
  7. Jacob Bourjaily, Nikhil Kalyanapuram, Cameron Langer, Kokkimidis Patatoukos, Marcus Spradlin, "Elliptic, Yangian-Invariant “Leading Singularity”." Phys. Rev. Lett. 126 20 (2021)
  8. Jacob Bourjaily, Enrico Herrmann, Cameron Langer, Jaroslav Trnka, "Building Bases of Loop Integrands." JHEP 11 (2020)

My research group