670 research outputs found
Density Perturbations in Chain Inflation
We consider the model of ``Chain Inflation,'' in which the period of
inflation in our universe took the form of a long sequence of quantum tunneling
events. We find that in the simplest such scenario, in which the tunneling
processes are uniform, approximately 10^4 vacua per e-folding of inflation are
required in order that the density perturbations produced are of an acceptable
size. We arrive at this conclusion through a combination of analytic and
numerical techniques, which could also serve as starting points for
calculations with more general sets of assumptions.Comment: 28 pages, 16 figures; v2: corrected typos, increased resolution on
D=2+1 data point
Living and Dying with a Disability in Debtor Society : Why Context Matters in Assisted Suicide Debates
Peer reviewedPostprin
The Lame to Walk and the Deaf to Hear : Why It Pays for Surveillance Capitalism to Exploit the Disabled
What is Research on Disability? Looking Backward to See Forward
Open access via T&F agreementPeer reviewedPublisher PD
Christianity, Boxing and Mixed Martial Arts : Reflections on Morality, Vocation, and Well-Being
Peer reviewedPublisher PD
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