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- Institute for Research in Fundamental SciencesIR12 papers
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5 papers · 1 filter
On effective actions of non-BPS branes and their higher derivative corrections
Mohammad R. Garousi
By calculating various disk level S-matrix elements and studying in details their momentum expansions, we have extracted some of the couplings in tachyon DBI action and Wess-Zumino…
Non-Douglas-Kazakov phase transition of two-dimensional generalized Yang-Mills theories
M. Khorrami, M. Alimohammadi
In two-dimensional Yang-Mills and generalized Yang-Mills theories for large gauge groups, there is a dominant representation determining the thermodynamic limit of the system. This…
Phase transitions of Large-N two-dimensional Yang-Mills and generalized Yang-Mills theories in the double scaling limit
M. Alimohammadi, M. Khorrami
The large-N behavior of Yang-Mills and generalized Yang-Mills theories in the double-scaling limit is investigated. By the double-scaling limit, it is meant that the area of the ma…
Attractor solutions for general hessence dark energy
M. Alimohammadi, H. Mohseni Sadjadi
As a candidate for the dark energy, the hessence model has been recently introduced. We discuss the critical points of this model in almost general case, that is for arbitrary hess…
Large-N limit of the two-dimensoinal Yang-Mills theory on surfaces with boundaries
M. Alimohammadi, M. Khorrami
The large-N limit of the two-dimensional U Yang-Mills theory on an arbitrary orientable compact surface with boundaries is studied. It is shown that if the holonomies of the g…