Zobrazeno 1 - 9
of 9
pro vyhledávání: '"H. H. Segnorile"'
Publikováno v:
Annals of Physics. 434:168655
This work addresses quantum adiabatic decoherence of many-body spin systems coupled with a boson field in the framework of open quantum systems theory. We generalize the traditional spin-boson model by considering a system-environment interaction Ham
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9cfdeb4f0327e57cb7541bafc96c1a7
https://doi.org/10.1016/j.aop.2021.168655
https://doi.org/10.1016/j.aop.2021.168655
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Refocalization sequences in nuclear magnetic resonance (NMR) can in principle reverse the coherent evolution under the secular dipolar Hamiltonian of a closed system. We use this experimental strategy to study the effect of irreversible decoherence o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65db124ea771aa5a03103ec85bb09140
http://link.aps.org/doi/10.1103/PhysRevB.95.224423
http://link.aps.org/doi/10.1103/PhysRevB.95.224423
Publikováno v:
Physical Review A. 93
We report a first-principle theoretical study of the adiabatic decoherence undergone by a nuclear spin system in a solid, coupled to the phonon field through the dipolar interaction. The calculations are performed for a chain of weakly interacting 1/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bf6f60fef97955791c57aa6d38f727a
https://doi.org/10.1103/physreva.93.022120
https://doi.org/10.1103/physreva.93.022120
A new methodology aimed to control the spatial dependence of a magnetic field within a volume of interest is described. The designed hardware uses Nuclear Magnetic Resonance (NMR) to sense the magnetic field. A modified version of the Statistical Sig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e77abd6fb27360819329071329c8703
http://ieeexplore.ieee.org/document/6502813/
http://ieeexplore.ieee.org/document/6502813/
Publikováno v:
Physical review. E, Statistical, nonlinear, and soft matter physics. 83(1 Pt 1)
Starting from the hypothesis that the decay of coherent signals observed in 1H NMR experiments is driven by quantum interference, irreversible decoherence, and nonidealities in the experiment, we design an experiment to isolate and identify the irrev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5182a54b017596d4b09dad03d4694f88
https://pubmed.ncbi.nlm.nih.gov/21405703
https://pubmed.ncbi.nlm.nih.gov/21405703
Two proton quasi-equilibrium states were previously observed in nematic liquid crystals, namely the S and W quasi-invariants. Even though the experimental evidence suggested that they originate in a partition of the spin dipolar energy into a strong
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1518b911e7a9782825d6ef6e7779a6a6
http://www.sciencedirect.com/science/article/pii/S0926204009000605
http://www.sciencedirect.com/science/article/pii/S0926204009000605
Publikováno v:
Physical review. E, Statistical, nonlinear, and soft matter physics. 74(5 Pt 1)
The high-temperature Redfield spin-lattice relaxation theory is used for calculating the relaxation times of the different dipolar quasi-invariants in an eight-spin system which represents methyl deuterated para-azoxyanisole (PAAd6) in the nematic ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d028cf848e2d6ff2c0d25927155873c
https://pubmed.ncbi.nlm.nih.gov/17279921
https://pubmed.ncbi.nlm.nih.gov/17279921
Autor:
H. H. Segnorile, R. C. Zamar
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
An experimental study of NMR spin decoherence in nematic liquid crystals is presented. Decoherence dynamics can be put in evidence by means of refocusing experiments of the dipolar interactions. The experimental technique used in this work is based o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b9e67642eb49cc4ccd1dcd961224651
https://doi.org/10.1063/1.4824124
https://doi.org/10.1063/1.4824124
Autor:
H. H. Segnorile, R. C. Zamar
Publikováno v:
The Journal of Chemical Physics. 135:244509
Explanation of decoherence and quasi-equilibrium in systems with few degrees of freedom demands a deep theoretical analysis that considers the observed system as an open quantum system. In this work, we study the problem of decoherence of an observed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e25357f301c83bda65fd9db5f5e6fdb5
https://doi.org/10.1063/1.3668559
https://doi.org/10.1063/1.3668559