Velocity-like maximum polarization: Irreversibility and quantum measurements
نویسندگان
چکیده
The polarization emerging in the subsequent scattering processes can never exceed 1 which corresponds to fully polarized pure state. This property is shown be provided by addition rule similar that for relativistic velocities exceeding speed of light. cases spin $1/2$ and are considered. photon linear Thomson monotonically increasing. directness a consequence measurement procedure may particular example anticipated relation between quantum time irreversibility. emergent considered as case opposing time's arrows corresponding microscopic (spin) macroscopic (momentum) degrees freedom, respectively.
منابع مشابه
Maximum confidence quantum measurements.
We consider the problem of discriminating between states of a specified set with maximum confidence. For a set of linearly independent states unambiguous discrimination is possible if we allow for the possibility of an inconclusive result. For linearly dependent sets an analogous measurement is one which allows us to be as confident as possible that when a given state is identified on the basis...
متن کاملInformation Transfer in Quantum Measurements: Irreversibility and Amplification
The aim of these lectures is to investigate the transfer of information occurring in course of quantum interactions. In particular, I shall explore circumstances in which such an information transfer with the quantum environment of the considered quantum system leads to the destruction of the phase coherence between the states of the privileged basis in the system Hilbert space. This basis shal...
متن کاملQuantum irreversibility and chaos.
für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...
متن کاملPolarization measurements of Vega-like stars
Optical linear polarization measurements are presented for about 30 Vega-like stars. These are then compared with the polarization observed for normal field stars. A significant fraction of the Vega-like stars are found to show polarization much in excess of that expected to be due to interstellar matter along the line of sight to the star. The excess polarization must be intrinsic to the star,...
متن کاملAnomalies , Unitarity and Quantum Irreversibility
The trace anomaly in external gravity is the sum of three terms at criticality: the square of the Weyl tensor, the Euler density and 2R, with coefficients, properly normalized, called c, a and a ′ , the latter being ambiguously defined by an additive constant. Unitarity and positivity properties of the induced actions allow us to show that the total RG flows of a and a ′ are equal and therefore...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review C
سال: 2022
ISSN: ['2470-0002', '2469-9985', '2469-9993']
DOI: https://doi.org/10.1103/physrevc.106.l012201