Quantum Gravity and Quantum Cosmology

Volume 863 of the series Lecture Notes in Physics pp 333-374

Unconventional Cosmology

  • Robert H. BrandenbergerAffiliated withPhysics Department, McGill University Email author 

* Final gross prices may vary according to local VAT.

Get Access


I review two cosmological paradigms which are alternative to the current inflationary scenario. The first alternative is the “matter bounce”, a non-singular bouncing cosmology with a matter-dominated phase of contraction. The second is an “emergent” scenario, which can be implemented in the context of “string gas cosmology”. I will compare these scenarios with the inflationary one and demonstrate that all three lead to an approximately scale-invariant spectrum of cosmological perturbations.