Is a zero energy universe a consequence from FRWL equations

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SUMMARY

The discussion centers on the implications of the Friedmann-Robertson-Walker-Lemaître (FRWL) equations in relation to the concept of a zero energy universe. Participants explore whether FRWL equations are a subset of Einstein's equations and if they allow for non-zero energy universes. Key references include "Birth of the Universe" and "A Universe from Nothing," which provide foundational insights into cosmological models and vacuum energy considerations.

PREREQUISITES
  • Understanding of Friedmann-Robertson-Walker (FRWL) equations
  • Familiarity with Einstein's General Relativity (GR) and Special Relativity (SR)
  • Basic knowledge of cosmology and the concept of vacuum energy
  • Ability to interpret scientific papers and articles related to cosmological theories
NEXT STEPS
  • Read "Birth of the Universe" for foundational cosmological concepts
  • Explore "A Universe from Nothing" to understand the implications of vacuum energy
  • Investigate the relationship between FRWL equations and Einstein's equations in detail
  • Study quantum cosmology and its impact on the initial state of the universe
USEFUL FOR

Astronomers, physicists, and students of cosmology seeking to deepen their understanding of the relationship between FRWL equations and the energy dynamics of the universe.

hurk4
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In order to speed up an insight into this question, which I posed to myself, I try PF to give me one or more reactions.
My complete question is:
Is a zero universe a consequence of FRWL equations/solutions? Are FRWL equations/solutions a subset of the Einstein equations? If yes, to one or both questions, do Einsteins SR and or GR equations leave freedom for for non-zero energy universes? :frown:
 
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Not necessarily. Some papers to consider:

Birth of the Universe
http://zebu.uoregon.edu/~js/ast123/lectures/lec17.html

A Universe from Nothing
http://www.astrosociety.org/pubs/mercury/31_02/nothing.html

Simple quantum cosmology: Vacuum energy and initial state
http://arxiv.org/abs/gr-qc/0501014
 
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