55 citations
3 papers
math-ph2005
Instability of Equilibrium States for Coupled Heat Reservoirs at Different Temperatures
M. Merkli, M. Mück, I. M. Sigal
We consider quantum systems consisting of a ``small'' system coupled to two reservoirs (called open systems). We show that such a system has no equilibrium states normal with respe…
quant-ph2005
On the notion of quantum Lyapunov exponent
M. F. Kondratieva, T. A. Osborn
Classical chaos refers to the property of trajectories to diverge exponentially as time tends to infinity. It is characterized by a positive Lyapunov exponent. There are many diffe…
cond-mat.mtrl-sci2005★ 55 cited
Goldstone-Mode Phonon Dynamics in the Pyrochlore Cd2Re2O7
C. A. Kendziora, I. A. Sergienko, R. Jin +4
We have measured the polarized Raman scattering spectra of Cd2Re2O7, the first superconducting pyrochlore, as a function of temperature. For temperatures below the cubic-to-tetrago…