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TZID:Europe/Vienna
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DTSTART:20180325T030000
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DTSTART:20171029T020000
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BEGIN:VEVENT
DTSTAMP:20260312T163554Z
UID:5914348f6b67c596451014@ist.ac.at
DTSTART:20180301T160000
DTEND:20180301T180000
DESCRIPTION:Speaker: Niels Benedikter\nhosted by Robert Seiringer\nAbstract
 : Spin Waves are collective excitations in the ordered phase of ferromagne
 tic materials. As spin waves have very low-energies\, they are easily crea
 ted as thermal fluctuations. In two landmark papers in 1956 Dyson pointed 
 out that\, nevertheless\, the contribution of spin waves to the thermo-dyn
 amic quantities is surprisingly small. I am going to present a simplified 
 version of Dyson's argument\, and show that it extends to other formulatio
 ns of spin-wave theory.Joint work with Ian Jauslin.
LOCATION:Big Seminar room Ground floor / Office Bldg West (I21.EG.101)\, IS
 TA
ORGANIZER:jdeanton@ist.ac.at
SUMMARY:Niels Benedikter: Perturbative analysis of spin-waves at low temper
 ature
URL:https://talks-calendar.ista.ac.at/events/1125
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