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BEGIN:VEVENT
DTSTAMP:20260815T184148Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20121031T180000Z
DTEND:20121031T190000Z
UID:event1004@bu.edu
URL:http://physics.bu.edu/internal/events/show/1004
SUMMARY:TBA
DESCRIPTION:Featuring Gordon Baym\, University of Illinois\, Urbana-Champai
	gn\nHosted by: David Campbell\n\nPart of the Condensed Matter Theory Semina
	r Series.\n\nABSTRACT: Landau in his classic 1941 paper argued that the flo
	w of a superfluid at speeds greater than the (Landau) critical velocity des
	troys superfluidity\, and conversely\, that the existence of such a critica
	l velocity is necessary for superfluidity. As this talk will show\, this cr
	iterion is neither necessary nor sufficient. Rather\, if the Landau criteri
	on is violated the superfluid mass density becomes smaller than the total m
	ass density. After a discussion of the fundamentals of superfluidity and th
	e superfluid mass density\, this talk will discuss the Landau criterion in 
	the context of various superfluids including an explicit model of the weakl
	y interacting Bose gas.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CANCELLED
CLASS:PUBLIC
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