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Hanbury Brown-Twiss interferometry and second-order correlations of inflaton quanta
Hanbury Brown-Twiss interferometry second-order correlations inflaton quanta
2010/12/24
The quantum theory of optical coherence is applied to the scrutiny of the statistical properties of the relic inflaton quanta. After adapting the description of the quantized scalar and tensor modes ...
In finance, one usually deals not with prices but with growth rates $R$, defined as the difference in logarithm between two consecutive prices. Here we consider not the trading volume, but rather the...
Protecting clean critical points by local disorder correlations
Protecting clean critical points local disorder correlations
2010/11/17
We show that a broad class of quantum critical points can be stable against locally correlated
disorder even if they are unstable against uncorrelated disorder. Although this result seemingly contrad...
A note on "Loophole-free Bell test for continuous variables via wave and particle correlations (Phys. Rev. Lett. 105, 170404 (2010))"
Loophole-free Bell test continuous variables via wave particle correlations
2010/11/8
The inequalities proposed in [Phys. Rev. Lett. 105, 170404 (2010)] are not Bell's inequalities in the usual sense: there are local classical models that violate these inequalities. Thus, their violati...
Loophole-free Bell test for continuous variables via wave and particle correlations
Loophole-free Bell test continuous variables via wave particle correlations
2010/11/8
We derive two classes of multi-mode Bell inequalities under local realistic assumptions, which are violated only by the entangled states negative under partial transposition in accordance with the Per...
Spatial correlations in parametric down-conversion
Spatial correlations parametric down-conversion
2010/10/29
The transverse spatial effects observed in photon pairs produced by parametric down-conversion provide a robust and fertile testing ground for studies of quantum mechanics, non-classical states of lig...
The Large-Scale Angular Correlations in CMB Temperature Maps
The Large-Scale Angular Correlations CMB Temperature Maps
2010/10/18
Observations show that the Cosmic Microwave Background (CMB) contains tiny variations at the 10¡5 level around its black-body equilibrium temperature. The detection of these temperature fluctuat...