TY - JOUR
T1 - Traversable wormholes and non-singular black holes from the vacuum of quadratic gravity
AU - Duplessis, Francis
AU - Easson, Damien
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/8/24
Y1 - 2015/8/24
N2 - We present new traversable wormhole and nonsingular black hole solutions in pure, scale-free R2 gravity. These exotic solutions require no null energy condition violating or "exotic" matter and are supported only by the vacuum of the theory. It is well known that f(R) theories of gravity may be recast as dual theories in the Einstein frame. The solutions we present are found when the conformal transformation required to move to the dual frame is singular. For quadratic R2 gravity, the required conformal factor is identically zero for spacetimes with R=0. Solutions in this case are argued to arise in the strong coupling limit of general relativity.
AB - We present new traversable wormhole and nonsingular black hole solutions in pure, scale-free R2 gravity. These exotic solutions require no null energy condition violating or "exotic" matter and are supported only by the vacuum of the theory. It is well known that f(R) theories of gravity may be recast as dual theories in the Einstein frame. The solutions we present are found when the conformal transformation required to move to the dual frame is singular. For quadratic R2 gravity, the required conformal factor is identically zero for spacetimes with R=0. Solutions in this case are argued to arise in the strong coupling limit of general relativity.
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U2 - 10.1103/PhysRevD.92.043516
DO - 10.1103/PhysRevD.92.043516
M3 - Article
AN - SCOPUS:84940398822
SN - 1550-7998
VL - 92
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 4
M1 - 043516
ER -