http://depot.umc.edu.dz/handle/123456789/12693 2026-04-30T20:25:36Z http://depot.umc.edu.dz/handle/123456789/12746 A NON COMMUTATIVE APPROACH TO COSMIC STRINGS MENACER, L; AISSAOUI, H A Cosmic string model based on Seiberg-Witten non commutative geometry is constructed. Black holes solutions are determined and the Hawking radiation temperature near the horizon is also derived 2013-12-16T00:00:00Z http://depot.umc.edu.dz/handle/123456789/12745 SOME VIABLE MODELS FROM EXTRA DIMENSIONAL UNIVERSES MOHADI, A Some viable models in a 5D space-time are presented and Friedman like equations are also obtained. A dynamical study is also investigated 2013-12-16T00:00:00Z http://depot.umc.edu.dz/handle/123456789/12744 SOME APPLICATIONS OF PT SYMMETRIC HAMILTONIANS AND PERSPECTIVES MORCHEDI, A General features of PT symmetric Hamiltonians are discussed and some physical applications are presented. Some perspectives are also proposed 2013-12-16T00:00:00Z http://depot.umc.edu.dz/handle/123456789/12743 OPEN SPINNING STRING BETWEEN TOW PARALLEL DP-BRANES IN THE NEUVEU-SCHWARZ MODEL HAMAM, D; BELALOUI, N We propose the previous study of the spinning string theory between tow parallel Dp-branes. This permits us to see that the important of D-branes in string theory. The spectrum have been found and the tachyonic states can be eliminate. The Virasoro superalgebra derived is an ordinary one 2013-12-16T00:00:00Z