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5 papers · 2 filters
Exploring the energy landscape of XY models
Rachele Nerattini, Michael Kastner, Dhagash Mehta +1
We investigate the energy landscape of two- and three-dimensional XY models with nearest-neighbor interactions by analytically constructing several classes of stationary points of…
The density of a fluid on a curved surface
Riccardo Fantoni
We discuss the property of the number density of a fluid of particles living in a curved surface without boundaries to be constant in the thermodynamic limit. In particular we find…
Two Component Plasma in a Flamm's Paraboloid
Riccardo Fantoni
The two component plasma (TCP) living in a Flamm's paraboloid is studied at a value of the coupling constant for which an analytic expression for the grand canonical partitio…
Equilibration of isolated macroscopic quantum systems
Peter Reimann, Michael Kastner
We investigate the equilibration of an isolated macroscopic quantum system in the sense that deviations from a steady state become unmeasurably small for the overwhelming majority…
Equilibration in long-range quantum spin systems from a BBGKY perspective
Rytis Paškauskas, Michael Kastner
The time evolution of -spin reduced density operators is studied for a class of Heisenberg-type quantum spin models with long-range interactions. In the framework of the quan…