Martin Panholzer, Helga Böhm, Robert Holler, Eckhard Krotscheck,
"Exchange Effects and the Dynamics of $^3$He"
, in Journal of Low Temperature Physics, Vol. 158, Nummer 1-2, Sp. Iss. SI, Springer, Seite(n) 135-140, 1-2010, ISSN: 1573-7357
Original Titel:
Exchange Effects and the Dynamics of $^3$He
Sprache des Titels:
Englisch
Original Kurzfassung:
Abstract = {{The ground state of strongly interacting Fermi fluids, specifically
$^3$He, is well understood, using either simulation or correlated basis
function techniques. However, the manifestly microscopic determination
of the dynamics of such systems still poses a number of open problems.
One of these is the importance of exchange effects in the density
channel. The subject of this work is to clarify this question.
We demonstrate here that exchange effects are, even in the density
channel, not negligible. The main consequence is a lowering of the
collective mode toward the particle-hole continuum in agreement with
recent measurements on $^3$He. In the experiment also a strong damping of
the collective mode is observed. Our results show that we should, by
including self-energy corrections and multipair-fluctuations, be able to
determine conclusively the many-particle aspects of that effect.}}
Sprache der Kurzfassung:
Englisch
Journal:
Journal of Low Temperature Physics
Veröffentlicher:
Springer
Volume:
158
Number:
1-2, Sp. Iss. SI
Seitenreferenz:
135-140
Erscheinungsmonat:
1
Erscheinungsjahr:
2010
ISSN:
1573-7357
Anzahl der Seiten:
6
Notiz zur Publikation:
17th International Conference on Quantum Fluids and Solids, Evanston, IL, AUG 05-11, 2009
Forschungs-