Existence of static wormhole solutions in f ( R , G ) $f(R,G)$ gravity
نویسندگان
چکیده
منابع مشابه
Stability of cosmological solutions in f R models of gravity
Ignacy Sawicki and Wayne Hu* Kavli Institute for Cosmological Physics, University of Chicago, Chicago, Illinois 60637, USA Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA Department of Physics, University of Chicago, Chicago, Illinois 60637, USA Department of Astronomy & Astrophysics, University of Chicago, Chicago, Illinois 60637, USA (Received 9 February 2007; publ...
متن کاملWormhole throats in R m gravity
We consider wormhole geometries subject to a gravitational action consisting of non-linear powers of the Ricci scalar. Specifically, wormhole throats are studied in the case where Einstein gravity is supplemented with a Ricci-squared and inverse Ricci term. In this modified theory it is found that static wormhole throats respecting the weak energy condition can exist. The analysis is done local...
متن کاملExact Cosmological Solutions of Nonlinear F (r)-gravity
We report on the cited papers refs. 1-18 from the following points of view: What do we exactly know about solutions when no exact solution (in the sense of " solution in closed form ") is available? In which sense do these solutions possess a singularity? In which cases do conformal relations and/or dimensional reductions simplify the deduction? Furthermore, we outline some open questions worth...
متن کاملSelf-consistent Wormhole Solutions of Semiclassical Gravity
We present the first results of a self-consistent solution of the semiclassical Einstein field equations corresponding to a Lorentzian wormhole coupled to a quantum scalar field. The specific solution presented here represents a wormhole connecting two asymptotically spatially flat regions. In general, the diameter of the wormhole throat, in units of the Planck length, can be arbitrarily large,...
متن کاملf(R) theories of gravity
Modified gravity theories have received increased attention lately due to combined motivation coming from high-energy physics, cosmology and astrophysics. Among numerous alternatives to Einstein’s theory of gravity, theories which include higher order curvature invariants, and specifically the particular class of f(R) theories, have a long history. In the last five years there has been a new st...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astrophysics and Space Science
سال: 2018
ISSN: 0004-640X,1572-946X
DOI: 10.1007/s10509-018-3470-3