Back to the home page of  Bogdan  A.  Dobrescu  

I am a Research Associate Scientist in Theoretical Particle Physics at Yale University.
You can have a look at my publications.
 


My research interests in High Energy Physics include attempts of answering questions such as:
 

  • Why is the range of weak interactions so much bigger than the Planck's distance?
           Possible answers involve fascinating theories of dynamical electroweak symmetry breaking,
           dynamical supersymmetry breaking, or compact spatial dimensions.
     
  • What is the explanation for the peculiar pattern of quark and lepton masses?  
            There are many known mechanisms for quark and lepton mass generation, but none of them
            seems to be entirely satisfactory. The origin of quark and lepton masses is directly related to
            a wide class of phenomena (let's call it flavor physics), which is under continuous experimental
            investigation.
     
    Other buzz words in my research include (but are not limited to): collider phenomenology, string theory,
    neutrino physics, chiral perturbation theory, the strong CP problem, cosmology, long-range forces.
     
    This list is ever expanding ...
     
    • If you happen to find these things too dry, I would like to invite you to review some basics facts about the adventure of Particle Physics.  

    Some of my recent achievements in Theoretical Particle Physics (in my view):

    1.   Investigated physics in universal extra dimensions. 
          (with Tom Appelquist and Hsin-Chia Cheng, December 2000, hep-ph/0012100)
          Showed that the number of fermion generations is constrained to be a multiple of three by
          the anomaly cancellation conditions in the 6-dimensional standard model.
          (with Erich Poppitz, Febr. 2001, hep-ph/0102010)
          Proved that a remnant of 6-dimensional Lorentz symmetry ensures the observed stability of
          the proton. (with T. Appelquist, E. Ponton, and H.-U. Yee, July 2001, hep-ph/0102010)

    2.   Showed that the standard model gauge bosons and fermions in extra dimensions
          give rise to a viable Higgs field. Computed the ensuing top-quark and Higgs boson masses.
          (with N. Arkani-Hamed, H.-C. Cheng, and L. Hall, June 2000, hep-ph/0006238)
          Established that the constituents of a composite Higgs doublet may be
          the top-bottom left handed doublet and the Kaluza-Klein modes of the right-handed top-quark.
          (with H.-C. Cheng and C. Hill, December 1999, hep-ph/9912343)
          Discovered the mechanism for electroweak symmetry breaking based on QCD in extra
          dimensions.  (1998, hep-ph/9812349)

    3.   Pointed out the possibility of highly non-standard Higgs decays
          in the Next-to-Minimal Supersymmetric Standard Model.
          (with Konstantin Matchev, August 2000, hep-ph/0008192)
          Studied a similar phenomenon in composite Higgs models
          (with Greg Landsberg and Konstantin T. Matchev, June 2000, hep-ph/0005308)

    4.   Discovered the Top-condensation seesaw mechanism.     (with Chris Hill, 1997, hep-ph/9712319)
          Set up the effective potential formalism for studying the Top-condensation seesaw mechanism,
          and showed that the composite Higgs boson may be light.
          (with Sekhar Chivukula, Howard Georgi, and Chris Hill, 1998, hep-ph/9809470)

    5.  Constructed a Supersymmetric Standard  Model in which the gauge invariance forbids all
         unwanted  operators.    (with Hsin-Chia Cheng and Konstantin Matchev, 1998, hep-ph/9811316)
     

    Bogdan Dobrescu, bogdan.dobrescu@yale.edu,                              Last updated: September 2001