Skip to main content Accessibility help
×
Hostname: page-component-848d4c4894-nmvwc Total loading time: 0 Render date: 2024-07-05T05:04:44.814Z Has data issue: false hasContentIssue false

7 - Theory Variant T3: A Modified Hard Core

Published online by Cambridge University Press:  20 April 2020

Get access

Summary

The fourth variant of Milgrom’s theory (T3) is due to Justin Khoury and Lasha Berezhiani. These researchers made a change to Milgrom’s postulates in order to address the failings of theory variants T0–T2. They introduced dark matter into the theory, but postulated that, on scales corresponding to galaxies, the dark matter acts like a superfluid condensate. By adjusting the equation of state of the superfluid, they showed that the interaction of the dark matter with normal matter – via Newtonian gravity, but also via coupling of the superfluid phonons – can result in an acceleration that approximates Milgrom’s modified dynamics in the low-acceleration regime. On large scales, the dark matter would behave like the dark matter in the standard model. Although still in an early stage of development, Khoury and Berezhiani’s theory has not yet demonstrated an increase in testable content compared withT0–T2, and in fact much of the content of the earlier theory variants is lost.

Type
Chapter
Information
A Philosophical Approach to MOND
Assessing the Milgromian Research Program in Cosmology
, pp. 181 - 203
Publisher: Cambridge University Press
Print publication year: 2020

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Save book to Kindle

To save this book to your Kindle, first ensure coreplatform@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Available formats
×

Save book to Dropbox

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.

Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

Available formats
×