2 papers
nucl-th1997
Lipkin-Meshkov-Glick model at finite temperature
A. N. Storozhenko, D. S. Kosov, A. I. Vdovin
The Lipkin-Meshkov-Glick model is used to examine the validity of some approximate methods in a many-body theory at finite temperatures. Namely, the thermal random phase approximat…
astro-ph1996
The Seyfert Galaxy NGC 6814 -- a highly variable X-ray source
Michael Koenig, Susanne Friedrich, Ruediger Staubert +1
The Seyfert galaxy NGC 6814 is a highly variable X-ray source despite the fact that it has recently been shown not to be the source of periodic variability. The 1.5 year monitoring…