204 citations · 2.9k across the 77 of their papers we have counts for
9 papers · 1 filter
More on Supersymmetric Domain Walls, N Counting and Glued Potentials
Ian I. Kogan, Alex Kovner, Mikhail Shifman
Various features of domain walls in supersymmetric gluodynamics are discussed. We give a simple field-theoretic interpretation of the phenomenon of strings ending on the walls rece…
Cos(M)ological Solutions in M- and String Theory
Nemanja Kaloper, Ian I. Kogan, Keith A. Olive
We consider solutions to the cosmological equations of motion in 11 dimensions with and without 4-form charges. We show explicitly the correspondence between some of these solution…
Origin of Logarithmic Operators in Conformal Field Theories
Ian I. Kogan, Alex Lewis
We study logarithmic operators in Coulomb gas models, and show that they occur when the ``puncture'' operator of the Liouville theory is included in the model. We also consider WZN…
A variational approach to the QCD wavefunctional: Calculation of the QCD beta-function
William E. Brown, Ian I. Kogan
The beta-function is calculated for an SU(N) Yang-Mills theory from an ansatz for the vacuum wavefunctional. Direct comparison is made with the results of calculations of the beta-…
Matrix Strings in Two-dimensional Yang-Mills Theory
Ian I. Kogan, Richard J. Szabo
We describe the structure of string vacuum states in the supersymmetric matrix model for M theory compactified on a circle in the large-N limit. We show that the theory admits topo…
ND Tadpoles as New String States and Quantum Mechanical Particle-Wave Duality from World-Sheet T-Duality
Ian I. Kogan, John F. Wheater
We consider new objects in bosonic open string theory -- ND tadpoles, which have N(euman) boundary conditions at one end of the world-sheet and D(irichlet) at the other, must exist…