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Holography stabilizes the vacuum energy.

Scott Thomas1

  • 1Department of Physics, Stanford University, Stanford, California 94305, USA.

Physical Review Letters
|August 23, 2002
PubMed
Summary

Gravitational holography offers a natural solution to the cosmological constant problem by stabilizing it against quantum corrections. This approach ensures quantum contributions to the stress-energy tensor remain small in an expanding universe.

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Area of Science:

  • Theoretical physics
  • Cosmology
  • Quantum gravity

Background:

  • The cosmological constant problem arises from large quantum corrections.
  • Existing solutions often lack technical naturalness.

Purpose of the Study:

  • To demonstrate the quantum stability of the cosmological constant using gravitational holography.
  • To provide a technically natural solution to the cosmological constant problem.

Main Methods:

  • Exploring bulk descriptions with delocalized degrees of freedom.
  • Analyzing boundary screen descriptions on stretched horizons.
  • Utilizing nonsupersymmetric conformal field theories for anti-de Sitter space.

Main Results:

  • Gravitational holography stabilizes the cosmological constant against divergent quantum corrections.
  • Holographic quantum contributions to the stress-energy tensor are bounded in expanding universes.

Conclusions:

  • Gravitational holography provides a robust framework for a stable cosmological constant.
  • This approach resolves the cosmological constant problem naturally and offers insights into quantum gravity.

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