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Achronal cosmic future.

Pedro F González-Díaz1

  • 1Colina de los Chopos, Centro de Física Miguel A. Catalán, Instituto de Matemáticas y Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 121, 28006 Madrid (SPAIN).

Physical Review Letters
|August 25, 2004
PubMed
Summary

Phantom energy accretion onto Morris-Thorne wormholes causes their throat radius to expand infinitely before the big rip singularity. The wormhole then transforms into an Einstein-Rosen bridge with vanishing mass.

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Area of Science:

  • Theoretical physics
  • Cosmology
  • General relativity

Background:

  • Morris-Thorne wormholes are theoretical structures that allow for faster-than-light travel.
  • Phantom energy is a hypothetical form of dark energy with negative pressure, driving accelerated expansion.
  • The big rip singularity is a hypothetical end of the universe where spacetime expands infinitely.

Purpose of the Study:

  • To investigate the effects of dark and phantom energy accretion on Morris-Thorne wormholes.
  • To analyze the evolution of wormhole throat radius under phantom energy accretion.
  • To determine the ultimate fate of wormholes in an accelerating universe.

Main Methods:

  • Spherical accretion model applied to Morris-Thorne wormholes.
  • Analysis of the wormhole throat radius dynamics.
  • Examination of the transition to an Einstein-Rosen bridge.

Main Results:

  • Phantom energy accretion causes a continuous increase in the wormhole throat radius.
  • The wormhole throat radius becomes infinite before the big rip singularity.
  • Post-singularity, the wormhole transforms into an Einstein-Rosen bridge with decreasing mass.

Conclusions:

  • Phantom energy accretion can prevent wormhole collapse and lead to a unique cosmic evolution.
  • Wormholes may evolve into Einstein-Rosen bridges under extreme cosmic conditions.
  • The study provides insights into the interplay between exotic matter and spacetime structures.

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