ALTERNATIVES TO THE INFLATIONARY PARADIGM OF STRUCTURE FORMATION

2009/02/27 by Robert Brandenberger, Robert H. Brandenberger · 5 citations
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Cosmology #Cosmology and Gravitation Theories #Earth Systems and Cosmic Evolution #Epistemology #Inflation (cosmology) #Philosophy #Physics #Quantum gravity #Quantum mechanics #Relationship between string theory and quantum field theory #String (physics) #String cosmology #String theory #Theoretical physics #Universe #astro-ph.CO #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1142/s2010194511000109

14 pages, 5 figures, to be published in the proceedings of CosPA08

arxiv created 2009/02/27 · openalex publication_date 2011/01/01 · arxiv updated 2015/05/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The inflationary paradigm, although very successful phenomenologically, suffers from several conceptual problems which motivate the search for alternative scenarios of early universe cosmology. Here, two possible alternatives will be reviewed. - "string gas cosmology" and the "matter bounce". Their successes and problems will be pointed out.

Citations

• STRING GAS COSMOLOGY AND STRUCTURE FORMATION
• Cosmology without inflation
• The Lee-Wick standard model
• Superstrings in the early universe
• String gas cosmology
• Duality invariance of cosmological perturbation spectra
• Towards a nonsingular tachyonic big crunch
• Trans-Planckian problem of inflationary cosmology

Cited by

• Pure Chromo-Natural Inflation: Signatures of Particle Production from Weak to Strong Backreaction
• Bouncing cosmological solutions from f(R,T) f ( R , T ) gravity
• An extended matter bounce scenario: current status and challenges
• Mass bound for primordial black hole from trans-Planckian censorship conjecture
• Tracing primordial black holes in nonsingular bouncing cosmology