Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Phantom energy mediates a long-range repulsive force.

Luca Amendola1

  • 1INAF/Osservatorio Astronomico di Roma, Viale Frascati 33, 00040 Monteporzio Catone, Rome, Italy.

Physical Review Letters
|November 5, 2004
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Effect-based methods and effect-based trigger values for estrogenicity monitoring in surface water: an interlaboratory study.

Environmental research·2026
Same author

Cosmological Spatial Curvature with the Alcock-Paczyński Effect.

Physical review letters·2025
Same author

Breath Analysis via Gas Chromatography-Mass Spectrometry (GC-MS) in Chronic Coronary Syndrome (CCS): A Proof-of-Concept Study.

Journal of clinical medicine·2024
Same author

Summary recommendations on "Analytical methods for substances in the Watch List under the Water Framework Directive".

The Science of the total environment·2023
Same author

Modular dual mobility articulation in primary and revision hip arthroplasty: lights and shadows.

Journal of orthopaedic surgery and research·2023
Same author

Use of dual-mobility cup in primary total hip arthroplasties: an Italian regional register (RIPO) study on three thousand, seven hundred and ten cases.

International orthopaedics·2022
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Scalar fields with nonstandard kinetic terms can exhibit repulsive forces when acting as phantom energy. This research explores their cosmological perturbations and gravitational interactions, revealing potential clustering on astrophysical scales.

Area of Science:

  • Cosmology
  • Theoretical Physics
  • String Theory

Background:

  • Scalar field models with nonstandard kinetic terms are relevant to k-inflation, Born-Infeld Lagrangians, phantom energy, and low-energy string theory.
  • Scalar fields typically couple to matter, introducing new interactions.

Purpose of the Study:

  • Derive cosmological perturbation equations for general scalar field models with nonstandard kinetic terms.
  • Investigate the Yukawa correction to gravity for these models.
  • Analyze the implications for phantom energy and dark energy behavior.

Main Methods:

  • Derivation of cosmological perturbation equations.
  • Calculation of Yukawa corrections to gravitational interactions.
  • Application of the derived formalism to generalized Brans-Dicke theory.

Related Experiment Videos

Main Results:

  • A negative coupling strength, leading to a long-range repulsive force, is found when the scalar field behaves as phantom energy (equation of state < -1).
  • The dark energy field demonstrates potential for clustering on astrophysical scales.
  • Newtonian effects in generalized Brans-Dicke theory depend on a single parameter generalizing the Brans-Dicke constant.

Conclusions:

  • Scalar field models with nonstandard kinetic terms exhibit unique gravitational and cosmological behaviors.
  • Phantom energy regimes can lead to repulsive gravitational forces.
  • These models offer new insights into dark energy and modified gravity theories.