95 citations · 114 across the 3 of their papers we have counts for
3 papers
hep-th2005
Vacua Landscape Attractor
Alvaro Nunez, Slava Solganik
The recent progress in the understanding of the landscape of string theory vacua hints that the hierarchy problem might be the problem of a super-selection rule. The attractor mech…
hep-th2004★ 95 cited
Ghost Constraints on Modified Gravity
Alvaro Nunez, Slava Solganik
We show that general infrared modifications of the Einstein-Hilbert action obtained by addition of curvature invariants are not viable. These modifications contain either ghosts or…
hep-th2004★ 19 cited
The content of f(R) gravity
Alvaro Nunez, Slava Solganik
We analyze the propagating degrees of freedom in gravity models where the scalar curvature in the action is replaced by a generic function of the curvature. That these gravi…