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DTSTART:20180325T030000
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DTSTART:20181028T020000
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DTSTAMP:20260406T211014Z
UID:59c8cf07a097a248848830@ist.ac.at
DTSTART:20180906T160000
DTEND:20180906T180000
DESCRIPTION:Speaker: Tibor Döme\nhosted by Laszlo Erdös\nAbstract: Common
  water ice is an unusual solid: The oxygen atoms form a periodic structure
  but the hydrogen atoms are highly disordered due to there being two inequ
 ivalent O-H bond lengths. The presence of these two bond lengths leads to 
 a macroscopic degeneracy of possible ground states\, such that the system 
 has finite entropy as the temperature tends towards zero (Pauling\, 1935).
  This measurable residual entropy does not violate the third law of thermo
 dynamics (which\, by the way\, has been disproven recently). However\, it 
 has never been calculated exactly for 3D ice\, only for 2D ice (Lieb\, 196
 7). In my talk\, I will use tools of classical statistical mechanics to so
 lve the much more general six-vertex model\, of which 2D ice is a special 
 case.
LOCATION:Big Seminar room Ground floor / Office Bldg West (I21.EG.101)\, IS
 TA
ORGANIZER:jdeanton@ist.ac.at
SUMMARY:Tibor Döme: The zero-point entropy of square hexagonal ice
URL:https://talks-calendar.ista.ac.at/events/1380
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