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14 papers · 2 filters
Non-Linear Sigma Model on the Fuzzy Supersphere
S. Kurkcuoglu
In this note we develop fuzzy versions of the supersymmetric non-linear sigma model on the supersphere S^(2,2). In hep-th/0212133 Bott projectors have been used to obtain the fuzzy…
Topology Change for Fuzzy Physics: Fuzzy Spaces as Hopf Algebras
A. P. Balachandran, S. Kurkcuoglu
Fuzzy spaces are obtained by quantizing adjoint orbits of compact semi-simple Lie groups. Fuzzy spheres emerge from quantizing S^2 and are associated with the group SU(2) in this m…
Can classical wormholes stabilize the brane-anti-brane system?
A. Pinzul, A. Stern
We investigate the static solutions of Callan and Maldecena and Gibbons to lowest order Dirac-Born-Infeld theory. Among them are charged wormhole solutions connecting branes to ant…
On the Status of Highly Entropic Objects
Donald Marolf, Rafael Sorkin
It has been proposed that the entropy of any object must satisfy fundamental (holographic or Bekenstein) bounds set by the object's size and perhaps its energy. However, most discu…
Inflation and Brane Gases
Robert Brandenberger, Damien A. Easson, Anupam Mazumdar
We investigate a new way of realizing a period of cosmological inflation in the context of brane gas cosmology. It is argued that a gas of co-dimension one branes, out of thermal e…
The Shapes of Dirichlet Defects
Mark Bowick, Antonio De Felice, Mark Trodden
If the vacuum manifold of a field theory has the appropriate topological structure, the theory admits topological structures analogous to the D-branes of string theory, in which de…