School of Astronomy (SoA) Weekly Seminar

 

Constant curvature solutions in cylindrically symmetric metric $f(R)$ Gravity


Davood Momeni- Karaj Islamic Azad Univ.
 

 
abstract
 
In the previous work [Phys. Lett. B., 670 (2008)] we introduced a new static cylindrically symmetric vacuum solutions in in Weyl coordinates in the context of the metric f(R) theories of gravity.Now we obtain a 2-parameter family of exact solutions which contains cosmological constant and a new parameter as [UTF-8?]β. This solution corresponds to a constant Ricci scalar. We proved that in f(R) gravity ,the constant curvature solution in cylindrically symmetric cases is only one member of the most generalized Tian family in GR. We show that our constant curvature exact solution is applicable to the exterior of a string. Sensibility of stability under initial conditions is discussed (Baesd on :arXiv:0903.0067).
 
 

 

Wednesday / 15-July-2009 / 24-Tir-1388/ 2:00 PM
 

IPM Larak Building, School of Astronomy and Astrophysics
Address: Larak Garden, opposite Araj, Artesh Highway,Tehran, Iran

 

 


 

 
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