3 papers
gr-qc2002
Gravitating Isovector Solitons
Nematollah Riazi, Hassan Niad
We formulate the nonlinear isovector model in a curved background, and calculate the spherically symmetric solutions for weak and strong coupling regimes. The usual belief that gra…
gr-qc2001
Spherical Structures in the Inflationary Cosmology
N. Riazi
It has been suggested that wormholes and other non-trivial geometrical structures might have been formed during the quantum cosmological era (s). Subsequent inflati…
hep-th2001
Geometry and Toplogy of Solitons
Nematollah Riazi
Basic concepts and definitions in differential geometry and topology which are important in the theory of solitons and instantons are reviewed. Many examples from soliton theory ar…