Office : Room 3308, Building E6-2KAIST, Daejeon, South Korea
    Telephone : +82-42-350-7317 
    Email : hyesung.lee(AT)


  • I study theoretical particle physics, which is about the fundamental building blocks of our universe and how they interact with each other. 
  • My major research interests are in the fundamental interactions of nature. Mostly, I study new gauge symmetries as the physics beyond the standard model. A new gauge interaction might be important in understanding the dark matter sector of the universe (e.g., this illustration). Since we do not know where this new fundamental force is hidden or what it couples to, a proper investigation requires studying broad areas of the particle physics. I am also interested in the formal aspects of the strong interaction (QCD), which is well known but still mysterious because of its non-perturbative nature. Recently, I also got interested in the effort of finding the renormalizable quantum gravity.
  • I enjoy conversations about physics and physics career with students. Please feel free to visit me at my office.
  • [Notice] If you are a KAIST student (undergraduate or graduate) interested in working with me, I suggest you to contact me early.


  • My Research Interests: Particle Theory (especially, physics beyond the standard model)
    • New fundamental interactions
    • Dark matter
    • Neutrino oscillations
    • Light new particles (such as dark photon, axion)
    • Connecting High-energy physics and Low-energy physics 
    • Reformulating Quantum Field Theory using modern mathematics
    • Conformal symmetry approach to Quantum Gravity
  • My Publications: 61 papers (51 regular papers + 10 reports; over 3000 citations; h-index = 26)


  • Education:
  • Experience:
  • Service:
    • Referee for PRL (since 2006), PRD (since 2006), JCAP (since 2008), EJPC (since 2016), PDG (since 2017), PLB (since 2019)
    • Auditor of Association of Korean Physicists in America (AKPA), 2013-2015
    • Member of Executive Committee and Publicity&Editorial Committee of AKPA, 2009-2011
    • The Z' Hunter's Guide (on-line introduction to Z' physics that I made as a graduate student)


  • Physics Information:

    Last Modified: July 2019