BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//INFN-LNF - ECPv5.14.2.1//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:INFN-LNF
X-ORIGINAL-URL:https://w3.lnf.infn.it
X-WR-CALDESC:Eventi per INFN-LNF
BEGIN:VTIMEZONE
TZID:Europe/Rome
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20180325T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20181028T010000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20181123T143000
DTEND;TZID=Europe/Rome:20181123T160000
DTSTAMP:20260830T231110
CREATED:20181024T185402Z
LAST-MODIFIED:20181130T184859Z
UID:13597-1542983400-1542988800@w3.lnf.infn.it
SUMMARY:MEasuring the Gravitational constant with Atom interferometry for Novel fundamental physics TEst (MEGANTE)
DESCRIPTION:Starting from the original experiment performed by Henry Cavendish more than two centuries ago\, the precision determination of the gravitational constant G remains a challenging endeavor.\nIt has been measured about a dozen times over the last 50 years\, but the results have varied much more than what would be expected from random and systematic errors. Likely\, this is due to the fact that\, so far\, all the past experiments have relied on macroscopic classical instruments\, which could all be governed by uncontrolled mechanical influences. On the other hand\, a recent controversial study about correlations between the measured values of G and the variations of the length of day seems to suggest that some other not well-understood effects could be present.\nThe MEGANTE experiment (ERC-StG-2018 hosted by INFN) will address all these issues by carrying out precision G determinations making use of original experimental strategies based on quantum sensors.\nUnprecedented accuracy levels will be achieved using cold atoms in free-fall to probe the gravitational field\, surpassing thus the state-of-art measurements based on torsion balance and simple pendulum. In parallel\, MEGANTE will provide results that go far beyond the pure metrological interest. Indeed\, owing the lack of a full understanding of gravity\, several theoretical models predict new physics phenomena such violations of the inverse square law or a dependency of the G value from the local density of the matter.\nIn the present talk I will present all the scientific and technical challenges that are needed to be faced in order to accomplish all the project goals.
URL:/event/measuring-the-gravitational-constant-with-atom-interferometry-for-novel-fundamental-physics-test-megante/
LOCATION:Aula Salvini
CATEGORIES:Seminari generali
END:VEVENT
END:VCALENDAR