Zobrazeno 1 - 10
of 129
pro vyhledávání: '"Balian, Roger"'
Publikováno v:
Comptes Rendus. Physique, Volume 25 (2024), pp. 251-287
We present a graduate course on ideal measurements, analyzed as dynamical processes of interaction between the tested system S and an apparatus A, described by quantum statistical mechanics. The apparatus A=M+B involves a macroscopic measuring device
Externí odkaz:
http://arxiv.org/abs/2405.20353
Autor:
Balian, Roger, Veneroni, Marcel
Time-dependent expectation values and correlation functions for many-body quantum systems are evaluated by means of a unified variational principle. It optimizes a generating functional depending on sources associated with the observables of interest
Externí odkaz:
http://arxiv.org/abs/1506.06015
Publikováno v:
International Journal of Modern Physics B 28 (21), 1430014, 2014
In textbooks, ideal quantum measurements are described in terms of the tested system only by the collapse postulate and Born's rule. This level of description offers a rather flexible position for the interpretation of quantum mechanics. Here we anal
Externí odkaz:
http://arxiv.org/abs/1406.5178
Publikováno v:
Annals of Physics 376, 324-352, 2017
To elucidate ideal measurements, one must explain how individual events emerge from quantum theory which deals with statistical ensembles, and how different may end up with different final states. This so-called "measurement problem" is tackled with
Externí odkaz:
http://arxiv.org/abs/1303.7257
Publikováno v:
Phys. Rep. 525 (2013) 1-166
The quantum measurement problem, understanding why a unique outcome is obtained in each individual experiment, is tackled by solving models. After an introduction we review the many dynamical models proposed over the years. A flexible and rather real
Externí odkaz:
http://arxiv.org/abs/1107.2138
The measurement of a spin-$\half$ is modeled by coupling it to an apparatus, that consists of an Ising magnetic dot coupled to a phonon bath. Features of quantum measurements are derived from the dynamical solution of the measurement, regarded as a p
Externí odkaz:
http://arxiv.org/abs/quant-ph/0702135