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VERSION:2.0
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BEGIN:VEVENT
DTSTAMP:20260912T132348Z
LAST-MODIFIED:20130114T161207Z
DTSTART:20130123T190000Z
DTEND:20130123T200000Z
UID:event1045@bu.edu
URL:http://physics.bu.edu/internal/events/show/1045
SUMMARY:Toward a unified description of spin incoherent behavior at zero an
	d finite temperatures
DESCRIPTION:Featuring Adrian Feiguin\, Northeastern University\nHosted by: 
	Michael Kolodrubetz\n\nPart of the Condensed Matter Theory Seminar Series.\
	n\nAbstract:\n\nWhile the basic theoretical understanding of spin-charge se
	paration in one-dimension\, known as "Luttinger liquid theory"\, has existe
	d for some time\, recently a previously unidentified regime of strongly int
	eracting one-dimensional systems at finite temperature came to light: The "
	spin-incoherent Luttinger liquid" (SILL). This occurs when the temperature 
	is larger than the characteristic spin energy scale. I will show that the s
	pin-incoherent state can be written exactly as a generalization of Ogata an
	d Shiba's factorized wave function in an enlarged Hilbert space\, using the
	 so-called "thermo-field formalism." Interestingly\, this wave-function can
	 also describe the *ground-state* of other model Hamiltonians\, such as t-J
	 ladders\, and the Kondo lattice. This allows us to develop a unified forma
	lism to describe SILL physics both at zero\, and finite temperatures.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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