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19 papers · 2 filters
Comments on Noncommutative Gauge Theories
Dongsu Bak, Kimyeong Lee, Jeong-Hyuck Park
We study the gauge theories on noncommutative space. We employ the idea of the covariant position to understand the linear and angular momenta, the center of mass position, and to…
Factorization and generalized *-products
Youngjai Kiem, Dong Hyun Park, Sangmin Lee
The generalized *-products, or the -products, appear both in the one-loop effective action of noncommutative Yang-Mills theories and in the coupling of a closed string to N op…
Noncommutative Vortex Solitons
Dongsu Bak, Kimyeong Lee, Jeong-Hyuck Park
We consider the noncommutative Abelian-Higgs theory and investigate general static vortex configurations including recently found exact multi-vortex solutions. In particular, we pr…
U-duality Between NCOS Theory and Matrix Theory
Seungjoon Hyun
We show that the NCOS (noncommutative open string) theories on torus () are U-dual to matrix theory on torus with electric flux background. Under U-duality, the numb…
String Fluid from Unstable D-branes
Gary Gibbons, Kentaro Hori, Piljin Yi
We consider Sen's effective action for unstable D-branes, and study its classical dynamics exactly. In the true vacuum, the Hamiltonian dynamics remains well-defined despite a vani…
The moduli space of two U(1) instantons on noncommutative and
Kimyeong Lee, David Tong, Sangheon Yi
We employ the ADHM method to derive the moduli space of two instantons in U(1) gauge theory on a noncommutative space. We show by an explicit hyperKähler quotient construction that…