English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In this work we consider a possible conceptual similarity between recent,amazing OPERA experiment of the superluminal propagation of neutrino andexperiment of the gain-assisted superluminal light propagation realized aboutten years ago. Last experiment refers on the propagation of the light,precisely laser pulse through a medium, precisely caesium atomic gas, withcharacteristic anomalous dispersion and corresponding negative group-velocityindex with very large amplitude between two closely spaced gain lines (that isin some way similar to quantum theory of the ferromagnetism). It impliessuperluminal propagation of the light through this medium. Nevertheless allthis, at it has been pointed out by authors, "is not at odds with causality orspecial relativity", since it simply represents "a direct consequence of theclassical interference between ... different frequency components". We suggestthat OPERA experiment can be in some way conceptually similar to thegain-assisted superluminal light propagation experiment. For this reason wesuppose too that OPERA experiment can be simply explained in full agreementwith causality and special relativity if there is some medium, precisely ascalar field (e.g. dark matter field, Higgs field or similar) through whichneutrino propagates. We prove that, according to OPERA experiment data,supposed medium must be non-dispersive while its refractive index must bepositive, smaller but relatively close to 1 (that is in some way similar toquantum theory of the diamagnetism). If it is true OPERA experiment results donot mean that special theory of relativity is broken, but they mean detectionof suggested medium, i.e. a scalar field (e.g. dark matter field, Higgs fieldor similar).

Is OPERA Neutrino Superluminal Propagation similar to Gain-Assisted Superluminal Light Propagation