Theoretical Particle Physics

Research Interests

The unifying theme of my research is the study of nonperturbative phenomena in particle physics. I intend to work towards building a detailed qualitative and quantitative picture of low energy QCD, but perspectively also to study subtle nonperturbative effects in electroweak theory and beyond. I view the use of lattice regularization as one of the most important tools for progressively achieving these goals. Consequently, various aspects of my work relate to subfields such as lattice field theory, lattice QCD, QCD vacuum structure, hadronic physics, critical phenomena and computational physics. I have also worked in the area of heavy ion phenomenology. The current source of excitement in my work is the study of QCD vacuum structure using new methods motivated by the recent availability of lattice chiral fermions.

Education and Experience

• B.S., Physics, Comenius University, Bratislava, Slovakia, 1989.
• Ph. D., University of Rochester and Brookhaven National Laboratory, 1995
• Postdoctoral associate, Supercomputer Computations Research Institute, Tallahassee, FL 1994-1997
• Postdoctoral associate, University of Virginia, Charlottesville, VA 1997-2000
• Postdoctoral scholar, University of Kentucky, Lexington, KY 2000-2003
• Research Professor, University of Kentucky, 2003-

• I. Horváth, S.J. Dong, T. Draper, F.X. Lee, K.F. Liu, N. Mathur, H.B. Thacker and J.B. Zhang: "Low-dimensional long-range topological structure in the QCD vacuum", ArXiv: hep-lat/0308029.
• S.J. Dong, T. Draper, I. Horváth, F.X. Lee, K.F. Liu, N. Mathur and J.B. Zhang: "Roper Resonance and $S_{11}(1535)$ from Lattice QCD", ArXiv: hep-ph/0306199.
• S.J. Dong, T. Draper, I. Horváth, F.X. Lee, K.F. Liu, N. Mathur and J.B. Zhang: "Chiral Logs in Quenched QCD", ArXiv: hep-lat/0304005.
• I. Horváth, S.J. Dong, T. Draper, F.X. Lee, K.F. Liu, N. Mathur, H.B. Thacker and J.B. Zhang: "Low-Dimensional Long-Range Topological Charge Structure in the QCD Vacuum", ArXiv: hep-lat/0302009.
• I. Horváth, S.J. Dong, T. Draper, K.F. Liu, F.X. Lee, N. Mathur, H.B. Thacker and J.B. Zhang: "Uncovering Low-Dimensional Topological Structure in the QCD Vacuum", ArXiv: hep-lat/0212013.
• I. Horváth, S.J. Dong, T. Draper, F.X. Lee, K.F. Liu, H.B. Thacker and J.B. Zhan g: "On the Local Structure of Topological Charge Fluctuations in QCD", Phys. Rev. D67 (2003) 011501(R).
• I. Horváth, S.J. Dong, T. Draper, N. Isgur, F.X. Lee, K.F. Liu, J. McCune, H.B. Thacker and J.B. Zhang: "Local Chirality of Low-Lying Dirac Eigenmodes and the Instanton Liquid Model", Phys. Rev. D66 (2002) 034501.
• M. Creutz, I. Horváth and H. Neuberger: "A New Fermion Hamiltonian for Lattice Gauge Theory", Nucl. Phys. B (Proc. Suppl.) 106 (2002) 760.
• I. Horváth, N. Isgur, J. McCune and H.B. Thacker: "Evidence Against Instanton Dominance of Low Energy QCD", Phys. Rev. D65 (2001) 014502.
• I. Horváth, C. T. Balwe and R. Mendris: "Strong Non-Ultralocality of Ginsparg-Wilson Fermionic Actions", Nucl. Phys. B 599 (2001) 283.
• I. Horváth: "Ginsparg-Wilson-Luscher Symmetry and Ultralocality", Phys. Rev. D60 (1999), 034510.
• I. Horváth, A.D. Kennedy and S. Sint: "A New Exact Method for Dynamical Fermion Computations with Non-Local Actions", Nucl. Phys. B (Proc. Suppl.) 73 (1999) 834.
• I. Horváth: "Ginsparg-Wilson Relation and Ultralocality", Phys. Rev. Lett. 81 (1998), 4063.
• I. Horváth and A.D. Kennedy: "The Local Hybrid Monte Carlo Algorithm for Free Field Theory: Reexamining Overr elaxation", Nucl. Phys. B 510 (1998), 367.
• R.G. Edwards, I. Horváth and A.D. Kennedy: "Instabilities and Non-Reversibility of Molecular Dynamics Trajectories", Nucl. Phys. B 484 (1997), 375.
• M. Creutz and I. Horváth: "Surface States and Chiral Symmetry on the Lattice", Phys. Rev. D50 (1994), 2297.
• V. Cerny, I. Horváth, R. Lietava, A. Nogova and J. Pisut: "On the Concept of the J/Psi Formation Time in Quark-Gluon Plasma", Z. Phys. C46 (1990), 481.
• I. Horváth, P. Lichard, R. Lietava, A. Nogova and J. Pisut: "On the Time Dependence of J/Psi Suppression by the Quark-Gluon Plasma", Phys. Lett. B214 (1988), 237.