Bart Horn

Assistant Professor, Physics

My research interests are in string theory and early universe cosmology, with current work focusing on the role of symmetries in spacetime and large scale structure, and applications of string theory to vortex lines in low-temperature fluids. Other past research topics include inflation and moduli fields, uplifting AdS/CFT dualities to cosmological spacetimes, and the stability and ultimate fate of bouncing universes.


Ph.D., Stanford University, 2012

A.B., Harvard College, 2007

Courses Taught

Phys 101  Mechanics

Phys 102  Electricity and Magnetism

Phys 192  Electricity and Magnetism Laboratory

Phys 209  Mathematical Methods in Physics

Phys 344  Topics in Cosmology

Phys 410  Theoretical Physics

Science 101  Physics Orientation Seminar

Science 201  Introduction to Astronomy

  • Research

    "The Higgs field and early universe cosmology: a (brief) review," Bart Horn, MDPI Physics 2 (2020) 3, 503-520.

    "Observable relics of the simple harmonic universe," Peter Gilmartin and Bart Horn,

    "Double-soft gravitons and the extended BMS charge algebra," Jacques Distler, Raphael Flauger, Bart Horn, JHEP 08 (2019) 021.

    “Positive curvature and scalar field tunneling in the landscape,” Bart Horn, Phys. Rev. D 99 (2019) 2, 025010.

    “Perturbations of vortex ring pairs,” Steven S. Gubser, Bart Horn and Sarthak Parikh, Phys. Rev. D93 (2016) 4, 046001.

    “Effective string theory for vortex lines in superfluids,” Bart Horn, Alberto Nicolis and Riccardo Penco, JHEP 1510 (2015) 153.

    “Lagrangian space consistency relation for large scale structure,” Bart Horn, Lam Hui and Xiao Xiao, JCAP 1509 (2015) 09, 068.

    “Soft-Pion Theorems for Large Scale Structure,” Bart Horn, Lam Hui and Xiao Xiao, JCAP 1409 (2014) 09, 044.

    “Exploring eternal stability with the simple harmonic universe,” Peter Graham, Bart Horn, Surjeet Rajendran, and Gonzalo Torroba, JHEP 1408 (2014) 163.

    “The squeezed limit of the solid inflation three-point function,” Solomon Endlich, Bart Horn, Alberto Nicolis, Junpu Wang, Phys. Rev. D90 (2014) 063506.

    “Moduli stabilization and the holographic RG for AdS and dS,” Xi Dong, Bart Horn, Eva Silverstein, Gonzalo Torroba, JHEP 1306 (2013) 89.

    “Perturbative critical behavior from spacetime dependent couplings,” Xi Dong, Bart Horn, Eva Silverstein, Gonzalo Torroba, Phys. Rev. D86 (2012) 105028.

    “Unitarity bounds and RG flows in time-dependent quantum field theory,” Xi Dong, Bart Horn, Eva Silverstein, Gonzalo Torroba, Phys. Rev. D86 (2012) 025013.

    “A Simple Harmonic Universe,” Peter Graham, Bart Horn, Shamit Kachru, Surjeet Rajendran and Gonzalo Torroba, JHEP 1402 (2014) 029.

    “FRW solutions and holography from uplifted AdS/CFT,” Xi Dong, Bart Horn, Shunji Matsuura, Eva Silverstein, Gonzalo Torroba, Phys. Rev. D85 (2012) 104305.

    “Simple exercises to flatten your potential,” Xi Dong, Bart Horn, Eva Silverstein, Alexander Westphal, Phys. Rev. D84 (2011) 026011.

    “Micromanaging de Sitter holography,” Xi Dong, Bart Horn, Eva Silverstein, Gonzalo Torroba, Class. Quant. Grav. 27 (2010) 245020.

    “Trapped Inflation,” Daniel Green, Bart Horn, Leonardo Senatore, Eva Silverstein, Phys. Rev. D80 (2009) 063533.