Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Ribeiro, P"'
We study the thermal and non-thermal steady state scaling functions and the steady-state dynamics of a model of local quantum criticality. The model we consider, i.e. the pseudogap Kondo model, allows us to study the concept of effective temperatures
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8ab95fb6cd95bae6b015021ed2c24d9
Autor:
Hlubek, N., Ribeiro, P., Saint-Martin, R., Nishimoto, S., Revcolevschi, A., Drechsler, S. -L., Behr, G., Trinckauf, J., Hamann-Borrero, J. E., Geck, J., Büchner, B., Hess, C.
We study the impact of a weak bond disorder on the spinon heat transport in the S=1/2 antiferromagnetic (AFM) Heisenberg chain material Sr_{1-x}Ca_xCuO_2. We observe a drastic suppression in the magnetic heat conductivity kappa_mag even at tiny disor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bedcb3e6f742f2c780d06f504cef637b
We propose an EPR inequality based on an entropic uncertainty relation for complementary continuous variable observables. This inequality is more sensitive than the previously established EPR inequality based on inferred variances, and opens up the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90ab376549e919040a25e4c5d20c04d9
Autor:
Ribeiro, P. Q., Gallinaro, M., Varela, J., Cms, Collaboration, Including, Albergo, S, Chiorboli, M, Costa, Salvatore, Galanti, M, Potenza, R, Tricomi, Alessia Rita, Tuve, C.
A study of the electron identification and selection efficiency of the L1 Trigger algorithm has been performed using the combined ECAL/HCAL test beam data. A detailed discussion of the electron isolation and its impact on the selection efficiency is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0938309f3159e05954bf32ae583843d
Magnetization data of single crystalline La4Sr10Cu24O41 are presented. In this compound, doped spin chains and undoped spin ladders are realized. The magnetization, at low temperatures, is governed by the chain subsystem with a finite interchain coup
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f83f48a27133741cfd8c9563b132ae6
Violation of Bell's Inequality with Transverse Spatial Variables Using Fractional Fourier Transforms
Autor:
Tasca, D. S., Almeida, M. P., Walborn, S. P., Pellat-Finet, P., Monken, C. H., Ribeiro, P. H. Souto
This paper has been withdrawn due to a crucial theoretical and experimental error.
Comment: This paper has been withdrawn
Comment: This paper has been withdrawn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1c3a9ba7feaa877b9a3036f41da55dd
Moir�� patterns are produced when two periodic structures with different spatial frequencies are superposed. The transmission of the resulting structure gives rise to spatial beatings which are called moir�� fringes. In classical optics, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4edf2e9e23397dfb11afe726ca1f199d
We demonstrate experimentally that it is possible to prepare and detect photon pairs created by spontaneous parametric down-conversion which exhibit simultaneous position-momentum and polarization correlations that are adequate to implement a four-di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8e9f1c9900860f242b3b39f9426a438
We observed moir�� fringes in spatial quantum correlations between twin photons generated by parametric down-conversion. Spatially periodic structures were nonlocally superposed giving rise to beat frequencies typical of moir�� patterns. This
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::277e1b78a744bdfb4a331aa9dab1096a
Autor:
Almeida, M. P., Ribeiro, P. H. Souto
We report on an experiment demonstrating the principle for transmitting quantum images through long distances. Signal and idler beams carrying correlated images have natural divergences that can be compensated by the use of collimating lenses and at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::621e6992e1faf952a69444da1c1cc921