1.0KMI - Nagoya Universityhttps://www.kmi.nagoya-u.ac.jp/engModified theories of gravity and mechanisms of mass screening - KMI - Nagoya Universityrich600338<blockquote class="wp-embedded-content" data-secret="mBbPuHDhWh"><a href="https://www.kmi.nagoya-u.ac.jp/eng/seminar/828/">Modified theories of gravity and mechanisms of mass screening</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.kmi.nagoya-u.ac.jp/eng/seminar/828/embed/#?secret=mBbPuHDhWh" width="600" height="338" title="“Modified theories of gravity and mechanisms of mass screening” — KMI - Nagoya University" data-secret="mBbPuHDhWh" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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Despite the overwhelming evidence for the existence of an acceleration ofthe Universe, the underlying fundamental physics remains unknown. As analternative to cosmological constant, the cosmic acceleration can resultfrom large scale modification of gravity which necessarily includeadditional degrees of freedom. If these additional degrees are welcomed atlarge scales they should be screened at small scales where GeneralRelativity is a perfect theory.During this talk, I will present the 3 screening mechanisms known in theliterature: chameleon, symmetron and Vainshtein mechanisms. I will show …