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14 papers · 2 filters
D-Brane Probe and Closed String Tachyons
Yoji Michishita, Piljin Yi
We consider a D-brane probe in unstable string background associated with flux branes. The twist in spacetime metric reponsible for the supersymmetry breaking is shown to manifest…
Comments on D-branes on general group manifolds
Yoji Michishita
We investigate D-branes with maximal symmetry on general group manifolds in terms of boundary states and effective actions. We show that in large limit boundary states with an…
Interacting Open Wilson Lines in Noncommutative Field Theories
Y. Kiem, S. Lee, S. -J. Rey +1
In noncommutative field theories, it was known that one-loop effective action describes propagation of non-interacting open Wilson lines, obeying the flying dipole's relation. We s…
Quantum Field Dynamics in a Uniform Magnetic Field: Description using Fields in Oblique Phase Space
Seok Kim, Choonkyu Lee, Kimyeong Lee
We present a simple field transformation which changes the field arguments from the ordinary position-space coordinates to the oblique phase-space coordinates that are linear in po…
Softness of Scherk-Schwarz Supersymmetry Breaking
Hyung Do Kim
We investigate how the mass correction appears in 5-D with Scherk-Schwarz compactification and clarify whether the KK regularization is reliable method or not. In the extremely sha…
On a Matrix Model of Level Structure
Jeong-Hyuck Park
We generalize the dimensionally reduced Yang-Mills matrix model by adding d=1 Chern-Simons term and terms for a bosonic vector. The coefficient, κof the Chern-Simons term must be i…