Wormholes supported by hybrid metric-Palatini gravity

Abstract

Recently, a modified theory of gravity was presented, which consists of the superposition of the metric Einstein-Hilbert Lagrangian with an $f(\mathcal{R})$ term constructed à la Palatini. The theory possesses extremely interesting features such as predicting the existence of a long-range scalar field, that explains the late-time cosmic acceleration and passes the local tests, even in the presence of a light scalar field. In this brief report, we consider the possibility that wormholes are supported by this hybrid metric-Palatini gravitational theory. We present here the general conditions for wormhole solutions according to the null energy conditions at the throat and find specific examples. In the first solution, we specify the redshift function, the scalar field and choose the potential that simplifies the modified Klein-Gordon equation. This solution is not asymptotically flat and needs to be matched to a vacuum solution. In the second example, by adequately specifying the metric functions and choosing the scalar field, we find an asymptotically flat spacetime.

arXiv comment4 pages. V2: 5 pages, discussion added; matches published version

References in corpus (40)

• f(R) Theories Of Gravity
• f(R) theories
• Extended Theories of Gravity
• Introduction to Modified Gravity and Gravitational Alternative for Dark Energy
• Is Cosmic Speed-Up Due to New Gravitational Physics?
• Curvature Quintessence
• Extra force in $f(R)$ modified theories of gravity
• Extended Theories of Gravity and their Cosmological and Astrophysical Applications
• Palatini Approach to Modified Gravity: f(R) Theories and Beyond
• f(R,L_m) gravity
• Wormhole geometries in f(R) modified theories of gravity
• Post-Newtonian constraints on f(R) cosmologies in Palatini formalism
• Post-Newtonian constraints on f(R) cosmologies in metric formalism
• Covariant conservation of energy momentum in modified gravities
• Stable dark energy stars
• Nonminimal coupling of perfect fluids to curvature
• Wormhole geometries in modified teleparralel gravity and the energy conditions
• Cosmological perturbations in the Palatini formulation of modified gravity
• Metric-Palatini gravity unifying local constraints and late-time cosmic acceleration
• Wormhole geometries supported by a nonminimal curvature-matter coupling
• Nonminimal curvature-matter coupled wormholes with matter satisfying the null energy condition
• Stability analysis of dynamic thin shells
• The matter power spectrum in f(R) gravity
• Plane symmetric thin-shell wormholes: solutions and stability
• A general class of braneworld wormholes
• General class of wormhole geometries in conformal Weyl gravity
• Surface stresses on a thin shell surrounding a traversable wormhole
• Violation of the Equivalence Principle in Modified Theories of Gravity
• Plane symmetric traversable wormholes in an anti-de Sitter background
• Energy conditions, traversable wormholes and dust shells
• Palatini formulation of modified gravity with a nonminimal curvature-matter coupling
• Unifying Einstein and Palatini gravities
• Phantom stars and topology change
• Isotropic and Anisotropic Bouncing Cosmologies in Palatini Gravity
• Hamiltonian Formulation of Palatini f(R) theories a la Brans-Dicke
• Dynamical Aspects of Generalized Palatini Theories of Gravity
• Cosmology of modified (but second order) gravity
• On new variational principles as alternatives to the Palatini method
• The post-Newtonian limit in C-theories of gravitation
• Palatini Actions and Quantum Gravity Phenomenology

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