112 citations · 354 across the 12 of their papers we have counts for
12 papers
The D0-brane metric in N = 2 sigma models
Thomas Wynter
We investigate the physical metric seen by a D0-brane probe in the background geometry of an N=2 sigma model. The metric is evaluated by calculating the Zamolodchikov metric for th…
High energy scattering amplitudes in matrix string theory
Thomas Wynter
High energy fixed angle scattering is studied in matrix string theory. The saddle point world sheet configurations, which give the dominant contributions to the string theory ampli…
Limits of Matrix Theory in Curved Space
Ph. Brax, T. Wynter
We study curved space versions of matrix string theory taking as a definition of the theory a gauged matrix sigma model. By analyzing the divergent terms in the loop expansion for…
Anomalies and large N limits in matrix string theory
Thomas Wynter
We study the loop expansion for the low energy effective action for matrix string theory. For long string configurations we find the result depends on the ordering of limits. Takin…
Gauge fields and interactions in matrix string theory
Thomas Wynter
It is shown that all possible N sheeted coverings of the cylinder are contained in type IIA matrix string theory as non-trivial gauge field configurations. Using these gauge field…
Complex Matrix Models and Statistics of Branched Coverings of 2D Surfaces
Ivan K. Kostov, Matthias Staudacher, Thomas Wynter
We present a complex matrix gauge model defined on an arbitrary two-dimensional orientable lattice. We rewrite the model's partition function in terms of a sum over representations…
Exact Solution of Discrete Two-Dimensional R^2 Gravity
V. A. Kazakov, M. Staudacher, T. Wynter
We exactly solve a special matrix model of dually weighted planar graphs describing pure two-dimensional quantum gravity with an R^2 interaction. It permits us to study the interme…
Advances in Large N Group Theory and the Solution of Two-Dimensional R^2 Gravity
V. A. Kazakov, M. Staudacher, T. Wynter
We review the recent exact solution of a matrix model which interpolates between flat and random lattices. The importance of the results is twofold: Firstly, we have developed a ne…
Almost Flat Planar Diagrams
Vladimir A. Kazakov, Matthias Staudacher, Thomas Wynter
We continue our study of matrix models of dually weighted graphs. Among the attractive features of these models is the possibility to interpolate between ensembles of regular and r…
Character Expansion Methods for Matrix Models of Dually Weighted Graphs
Vladimir A. Kazakov, Matthias Staudacher, Thomas Wynter
We consider generalized one-matrix models in which external fields allow control over the coordination numbers on both the original and dual lattices. We rederive in a simple fashi…
Large Phase Transition In The Heat Kernel On The Group
Vladimir A. Kazakov, Thomas Wynter
The large N phase transition point is investigated in the heat kernel on the group with respect to arbitrary boundary conditions. A simple functional relation is found relat…
Constraints on a Massive Dirac Neutrino Model
Thomas Wynter, Lisa Randall
We examine constraints on a simple neutrino model in which there are three massless and three massive Dirac neutrinos and in which the left handed neutrinos are linear combinations…