English

Hyperscaling Violating Solution in Coupled Dilaton-Squared Curvature Gravity

High Energy Physics - Theory 2014-08-28 v2

Abstract

Considering a model with Coupled Dilaton-Squared Curvature terms and a dilatonic potential which replace the cosmological constant, we present an analytic hyperscaling violating solution which is the generalization of arXiv:1305.3279 for non zero θ\theta. We show that a specific coupling between dilaton and the squared curvature terms produces a simple logarithmic behavior for the dilaton. By imposing the null energy condition and stability constraints, we investigate the allowed regions for the parameters of this model. We then study the perturbations around AdS4\mathrm{AdS_4} in the UV and AdS2×R2\mathrm{\mathrm{AdS}_2\times \mathbb{R}^2} in the IR of the Einstein-Weyl gravity which can support an intermediate hyperscaling violating solution in order to resolve the IR\mathrm{IR} singularity of the metric in 4d.

Keywords

Cite

@article{arxiv.1404.5399,
  title  = {Hyperscaling Violating Solution in Coupled Dilaton-Squared Curvature Gravity},
  author = {Mahdis Ghodrati},
  journal= {arXiv preprint arXiv:1404.5399},
  year   = {2014}
}

Comments

21 Pages, 17 figures, references added

R2 v1 2026-06-22T03:55:25.796Z