BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//RLASKEY//CALENDEROUS//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20261021T123158Z
LAST-MODIFIED:20131119T173307Z
DTSTART:20131122T150000Z
DTEND:20131122T160000Z
UID:event1185@bu.edu
URL:http://physics.bu.edu/internal/events/show/1185
SUMMARY:Emergent Phenomena and Fluctuations in Cooperative Systems
DESCRIPTION:Featuring Alan Gabel\n\nPart of the PhD Final Oral Exams.\n\nEx
	amining Committee: Sidney Redner\, Pankaj Mehta\, Shyamsunder Erramilli\, M
	artin Schmaltz\nand Anatoli Polkovnikov\n\n![Allan](/resources/event-image/
	1185/0568a3c_small)\n\nABSTRACT: We explore the role of cooperativity and l
	arge deviations on a set of fundamental non-equilibrium many-body systems.\
	n\n\nIn the cooperative asymmetric exclusion process\, particles hop to the
	 right at a constant rate only when the right neighboring site is vacant an
	d hop at a faster rate when the left neighbor is occupied. In this model\, 
	a host of new heterogeneous density profile evolutions arise\, including in
	verted shock waves and continuous compression waves. Cooperativity also dri
	ves the growth of complex networks via preferential attachment\, where well
	-connected nodes are more likely to attract future connections. We introduc
	e the mechanism of hindered redirection and show that it leads to network e
	volution by sublinear preferential attachment. We further show that no loca
	l growth rule can recreate superlinear preferential attachment. We also int
	roduce enhanced redirection and show that the rule leads to networks with t
	hree unusual properties: (i) many macrohubs — nodes whose degree is a fin
	ite fraction of the number of nodes in the network\, (ii) a non-extensive d
	egree distribution\, and (iii) large fluctuations between different realiza
	tions of the growth process.\n\n\nWe next examine large deviations in the d
	iffusive capture model\, where N diffusing predators initially all located 
	at L `chase' a diffusing prey initially at x
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
END:VEVENT
END:VCALENDAR