10.9k citations
- University of PittsburghUS1.8k papers
- Yale UniversityUS1.7k papers
- Argonne National LaboratoryUS1.7k papers
- University of OxfordGB1.7k papers
- University of MichiganUS1.7k papers
- University of ChicagoUS1.7k papers
- Michigan State UniversityUS1.7k papers
- University of GenevaCH1.7k papers
- University College LondonGB1.6k papers
- Lawrence Berkeley National LaboratoryUS1.6k papers
- The Ohio State UniversityUS1.6k papers
- Duke UniversityUS1.6k papers
12 papers · 2 filters
Eternal inflation and the present universe
Alexander Vilenkin
Eternally inflating universes can contain thermalized regions with different values of the cosmological parameters. In particular, the spectra of density fluctuations should be dif…
Backgrounds of squeezed relic photons and their spatial correlations
Massimo Giovannini
We discuss the production of multi-photons squeezed states induced by the time variation of the (Abelian) gauge coupling constant in a string cosmological context. Within a fully q…
Lightcone fluctuations in quantum gravity and extra dimensions
Hongwei Yu, L. H. Ford
We discuss how compactified extra dimensions may have potentially observable effects which grow as the compactification scale decreases. This arises because of lightcone fluctuatio…
The Ori-Soen time machine
Ken D. Olum
Ori and Soen have proposed a spacetime which has closed causal curves on the boundary of a region of normal causality, all within a region where the weak energy condition (positive…
Sensitivity of wide band detectors to quintessential gravitons
Danilo Babusci, Massimo Giovannini
There are no reasons why the energy spectra of the relic gravitons, amplified by the pumping action of the background geometry, should not increase at high frequencies. A typical e…
Fluctuations of the Hawking Flux
C. -H. Wu, L. H. Ford
The fluctuations of the flux radiated by an evaporating black hole will be discussed. Two approaches to this problem will be adopted. In the first, the squared flux operator is def…