Observables

Some articles on observables, observable:

Topological String Theory - Observables - What Do The Correlators Depend On?
... is an anticommutator of a supercharge and so does not affect the topological observables ... This implies that A model observables are independent of the superpotential (as it may be written as an integral over just ) but depend holomorphically on the twisted ...
Density Matrix - C*-algebraic Formulation of States
... of quantum mechanics in which all self-adjoint operators represent observables is untenable ... For this reason, observables are identified to elements of an abstract C*-algebra A (that is one without a distinguished representation as an algebra of operators ... the system is classical, the algebra of observables become an abelian C*-algebra ...
Complete Set Of Commuting Observables
... mechanics, a complete set of commuting observables (CSCO) is a set of commuting operators whose eigenvalues completely specify the state of a system (Gasiorowicz 1974, p ... Since each pair of observables in the set commutes, the observables are all compatible so that the measurement of one observable has no effect on the result of measuring ... to specify the order in which the different observables are measured ...
Incompatibility of Observables in Quantum Mechanics
... between classical quantities and quantum mechanical observables is that the latter may not be simultaneously measurable ... inequality expresses a dependence of measurement results on the order in which measurements of observables and are performed ... Observables corresponding to non-commutative operators are called incompatible ...
Renormalization Group - Relevant and Irrelevant Operators, Universality Classes
... Let us consider a certain observable of a physical system undergoing an RG transformation ... The magnitude of the observable as the length scale of the system goes from small to large may be (a) always increasing, (b) always decreasing or (c) other ... In the first case, the observable is said to be a relevant observable in the second, irrelevant and in the third, marginal ...