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- Jian-Ge Zhou
- 1999

The super 0-brane and GS superstring actions on AdS 2 × S 2 background with 2-form flux are constructed by supercoset approach. We find the super 0-brane action contains two parameters which are interpreted as the electric and magnetic charges of the super 0-brane. The obtained super 0-brane action describes the BPS saturated dyonic superparticle moving on… (More)

Background independence of noncommutative Yang-Mills theory on R n is dis

The potential between two D4-branes at angles with partially unbroken supersymme-try is computed, and is used to discuss the creation of a fundamental string when two such D4-branes cross each other in M(atrix) theory. The effective Lagrangian is shown to be anomalous at 1-loop approximation, but it can be modified by bare Chern-Simons terms to preserve the… (More)

We construct D-branes in a left-right asymmetrically gauged WZW model, with the gauge subgroup embedded differently on the left and the right of the group element. The symmetry-preserving boundary conditions for the group-valued field g are described, and the corresponding action is found. When the subgroup H = U(1), we can implement T-duality on the… (More)

- Jian-Ge ZHOU
- 2000

We discuss possible D-brane configurations on SU(2) group manifold in the sigma model approach. When we turn the boundary conditions of the spacetime fields into the boundary gluing conditions of chiral currents, we find that for all D-branes except the spherical D2-branes, the gluing matrices R a b depend on the fields, so the chiral Kac-Moody symmetry is… (More)

We study the creation of a fundamental string between D4-branes at angles in string theory. It is shown that R(−1) F part of the one-loop potential of open string changes its sign due to the change of fermionic zero-mode vacua when the branes cross each other. As a result the effective potential is independent of the angles when supersymmetry is partially… (More)

- Jian-Ge Zhou
- 2008

We construct the string states |O > J 1 J 2 in the Hilbert space of the quantum mechanical orbifold model so as to calculate the three point functions and the matrix elements of the light-cone Hamiltonian from the interacting string bit model. With these string states we show that the three point functions and the matrix elements of the Hamiltonian derived… (More)

Gluing conditions are proposed to characterize the D-branes in gauged WZW models. From them the boundary conditions for the group-valued and the subgroup-valued fields are determined. We construct a gauged WZW action for open strings that coincides classically with those written previously, when the gluing conditions are imposed. This action is also used to… (More)

The partition function in Matrix theory is constructed by Euclidean path integral method. The D0-branes, which move around in the finite region with a typical size of Schwarzschild radius, are chosen as the background. The mass and entropy of the system obtained from the partition function contain the parameters of the background. After averaging the mass… (More)

An explicit solution in super Yang-Mills theory, which after T-duality describes two sets of D4-branes at angles, is constructed. The gauge configuration possesses 3/16 unbroken supersymmetry, and can be considered as the counterpart of the solution of D = 11 supergravity with the same amount of supersymmetry in the solutions given by Gauntlett et al. The… (More)