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19 papers · 2 filters
A Thermodynamic Interpretation of Time for Rolling Tachyons
Vijay Balasubramanian, Niko Jokela, Esko Keski-Vakkuri +1
We show that the open string worldsheet description of brane decay (discussing a specific example of a rolling tachyon background) can be related to a sequence of points of thermod…
Spherically expanding matter in AdS/CFT
K. Kajantie, T. Tahkokallio
We discuss an exact time dependent O(3) symmetric solution with a horizon of the 5d AdS classical gravity equations searching for a 4d boundary theory which would correspond to exp…
Hyperkahler sigma models on cotangent bundles of Hermitian symmetric spaces using projective superspace
Masato Arai, Sergei M. Kuzenko, Ulf Lindstrom
Kahler manifolds have a natural hyperkahler structure associated with (part of) their cotangent bundles. Using projective superspace, we construct four-dimensional N = 2 models on…
Riemannian Geometry of Noncommutative Surfaces
M. Chaichian, A. Tureanu, R. B. Zhang +1
A Riemannian geometry of noncommutative n-dimensional surfaces is developed as a first step towards the construction of a consistent noncommutative gravitational theory. Historical…
Radius stabilization by constant boundary superpotentials in warped space
Nobuhito Maru, Norisuke Sakai, Nobuhiro Uekusa
A warped space model with a constant boundary superpotential has been an efficient model both to break supersymmetry and to stabilize the radius, when hypermultiplet, compensator a…
A Noncommutative Version of the Minimal Supersymmetric Standard Model
Masato Arai, Sami Saxell, Anca Tureanu
A minimal supersymmetric standard model on noncommutative space-time (NC MSSM) is proposed. The model fulfils the requirements of noncommutative gauge invariance and absence of ano…