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BEGIN:VEVENT
DTSTAMP:20261019T024259Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20120131T213000Z
DTEND:20120131T223000Z
UID:event854@bu.edu
URL:http://physics.bu.edu/internal/events/show/854
SUMMARY:Phase Transition Kinetics and Critical Phenomena in the Site Dilute
	d Ising Model
DESCRIPTION:Featuring Kang Liu\n\nPart of the Preliminary Oral Exam.\n\nExa
	mining Committee:  William Klein\, Karl Ludwig\, Anatoli Polkovnikov\,
	 Martin Schmaltz\n\nIn this talk\, I will present our study on the effect o
	f quenched site dilution on the phase transition kinetics and critical phen
	omena of the 2D Ising model. First\, I will discuss the effect of the dilut
	ion on the classical nucleation theory by showing some simulation data for 
	the 2D dilute Ising model with nearest neighbor interactions. Then I will m
	ove on to systems with long range interactions\, generalize the Harris crit
	erion to mean-field and near mean-field systems and show that the critical 
	exponents of both the critical point and spinodal do not change regardless 
	of the dimensionality. This is supported by measurements of the isothermal 
	susceptibility near the spinodal line from Monte-Carlo simulations. Then I 
	will introduce a coarse-grained field theory for a specific dilution realiz
	ation using the Hubbard-Stratanovich transformation\, and discuss some appl
	ications of this field theory. Finally\, I will generalize the Coniglio-Kle
	in method by mapping the diluted Ising critical point onto an equivalent si
	te-bond percolation problem. \n\n \n 
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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