More precisely, we study an atom (an *-algebra of (quasi-local) observables for the quantum system in question, the dynamics of the system is generated by a Liouville operator acting on a positive temperature Hilbert space. Many key properties of the system, such as return to equilibrium (...
We show that the cohomology of the Becchi-Rouet-Stora diffeomorphism operator on the integrated functions in Rcan be easily computed as a series whose term... Bandelloni,Giuseppe - 《Physical Review D Particles & Fields》 被引量: 48发表: 1988年 Canonical quantum gravity in the Vassiliev invaria...
Other examples from quantum mechanics are the Liouville–von-Neumann equation for the density operator ρ(t) or master equations for dissipative systems [2]. Analytical solutions of such equations can be found only in a very limited number of cases. In most situations one must resort to ...
nonrelativistic quantum mechanicstime-independent Schrodinger equationmodel HamiltonianThe present work is a version of Van Vleck–Primas perturbation method in terms of generalized ladder operators. Using the superoperator approach, a fully general, self-consistent and a totally free scheme from ...
A remark on the representation of the commutator of L z and03.65Quantum theoryquantum mechanicsIn this paper the representation of the operator Lsub(z) is discussed. (C.P.)doi:10.1007/BF02748470L. C. PapaloucasSocietà Italiana di FisicaLettere al Nuovo Cimento...
The Hamiltonian constraint in quantum gravity We develop further the Rovelli-Smolin loop variable formulation of canonical quantum gravity. The main result is the construction of a hamiltonian operator which is well defined on all of loop state space. The hamiltonian operator acts a... MP Blencowe...
The cases of real functions, quantum coordinate and momentum operators, time and Liouville operator, and quantum time and energy operators, are analyzed within this formalism. This procedure allows the elucidation of the properties of time in classical and quantum mechanics....