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DTSTAMP:20260915T200534Z
LAST-MODIFIED:20140320T161514Z
DTSTART:20140407T183000Z
DTEND:20140407T193000Z
UID:event1260@bu.edu
URL:http://physics.bu.edu/internal/events/show/1260
SUMMARY:Mixed order phase transitions in one dimension
DESCRIPTION:Featuring Amir Bar\, Weizman Institute\nHosted by: Yariv Kafri\
	n\nPart of the Condensed Matter Theory Seminar Series.\n\nAbstract:\nContin
	uous phase transitions\, in which the order parameter changes continuously 
	at the transition\, exhibit universal features such as critical exponents. 
	 This universality is deeply related to the divergence of a length scale. O
	n the other hand  first order transition\, in which the order parameter is 
	discontinuous\, are not associated with diverging length scales and hence t
	hey are non-universal. This dichotomy fails in quite a number of models whi
	ch exhibit phase transitions of mixed nature\, namely transitions which on 
	the one hand exhibit a diverging correlation length and on the other hand d
	isplay a discontinuous order parameter. Examples include models of wetting\
	, glass and jamming transitions\, DNA denaturation\, rewiring networks  and
	 some one-dimensional models with long-range interactions.\nAn exactly solu
	ble Ising model which provides a link between some of these rather distinct
	 classes of systems is introduced and analyzed through exact calculations a
	nd renormalization group (RG) analysis. The RG analysis reveals an intrigui
	ng connection between Bose Einstein condensation type transitions and Koste
	rlitz-Thouless type transitions in one dimension. In addition\, the coarsen
	ing dynamics of such mixed order transition is presented\, and the relation
	 to the voter model and related models is discussed.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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