9 citations · 10 across the 5 of their papers we have counts for
6 papers · 1 filter
New Structures in the Theory of the Laser Model
F. Bagarello, G. L. Sewell
In a recent article, Alli and Sewell formulated a new version of the Dicke-Hepp-Lieb laser model in terms of quantum dynamical semigroups, and thereby extended the macroscopic pict…
On the Mathematical Theory of Superfluidity
Geoffrey L. Sewell, Walter F. Wreszinski
We provide a general operator algebraic formulation of superfluidity in Bose systems, with the aim of investigating the relationships of this phenomenon both to off-diagonal long r…
On Order, Disorder and Coherence
Geoffrey Sewell
We provide a brief survey of quantum statistical characterisations of order, disorder and coherence in systems of many degrees of freedom. Here, order and coherence are described i…
On Connections between the Quantum and Hydrodynamical Pictures of Matter
Geoffrey Sewell
We present a general, model-independent, quantum statistical treatment of the connection between the quantum and hydrodynamical pictures of reservoir driven macroscopic systems. Th…
On the mathematical Structure of Quantum Measurement Theory
Geoffrey Sewell
We show that the key problems of quantum measurement theory, namely the reduction of the wave packet of a microsystem and the specification of its quantum state by a macroscopic me…
Quantum macrostatistical picture of nonequilibrium steady states
Geoffrey L. Sewell
We employ a quantum macrostatistical treatment of irreversible processes to prove that, in nonequilibrium steady states, (a) the hydrodynamical observables execute a generalised On…