Search Results - "Esposito, U"

Callen-like method for the classical Heisenberg ferromagnet by Campana, L.S., Cavallo, A., De Cesare, L., Esposito, U., Naddeo, A.

“…A study of the d-dimensional classical Heisenberg ferromagnetic model in the presence of a magnetic field is performed within the two-time Green function’s…”
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Thermodynamics of the Classical Planar Ferromagnet Close to the Zero-Temperature Critical Point : A Many-Body Approach by Campana, L. S., Cavallo, A., De Cesare, L., Esposito, U., Naddeo, A.

“…We explore the low-temperature thermodynamic properties and crossovers of a d-dimensional classical planar Heisenberg ferromagnet in a longitudinal magnetic…”
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Temperature-dependent scaling fields and quantum criticality within the Wilson renormalization group approach by D'Auria, A.Caramico, De Cesare, L., Esposito, U., Rabuffo, I.

“…Within the Wilson Renormalization Group (WRG) approach as applied to d-dimensional quantum systems using appropriate functional representations, we develop a…”
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Paramagnetic susceptibility and correlation functions of a d-dimensional classical Heisenberg ferromagnet via the two-time Green function method by Campana, L.S., Cavallo, A., Cesare, L. De, Esposito, U., Naddeo, A.

“…In the present paper we investigate the paramagnetic susceptibility and the short-range order correlation functions of a d-dimensional classical isotropic…”
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Transfer-matrix simulations of the antiferromagnetic chains and mesoscopic rings by Kamieniarz, G., Matysiak, R., Caramico D'Auria, A., Esposito, F., Esposito, U.

“…The quantum transfer-matrix method (QTM) has been applied to study the finite-temperature static properties of the spin S = 1 antiferromagnetic Heisenberg…”
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Characterization of s = 1 molecular magnetic chains by Caramico D'Auria, A., Esposito, U., Esposito, F., Gatteschi, Dante, Kamieniarz, G., Wałcerz, S.

“…A numerical quantum transfer-matrix approach to S = 1 macroscopic chains with single-site anisotropy and alternating bonds is worked out. A fit of the…”
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Field-induced quantum critical point in planar Heisenberg ferromagnets with long-range interactions: Two-time Green’s function framework by Campana, L. S., De Cesare, L., Esposito, U., Mercaldo, M. T., Rabuffo, I.

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Metabolic Mapping of the Brain during Rewarding Self-Stimulation by Porrino, Linda J., Esposito, Ralph U., Seeger, Thomas F., Crane, Alison M., Pert, Agu, Sokoloff, Louis

“…Local rates of cerebral glucose utilization were measured in rats by the quantitative 2-deoxy-D-[$^{14}$C]glucose autoradiographic method during electrical…”
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Two-time Green’s function treatment of field-induced quantum criticality of a d -dimensional easy-plane ferromagnet with longitudinal uniform interactions by Campana, L.S., De Cesare, L., Esposito, U., Mercaldo, M.T.

“…The two-time Green’s function equation of motion method is employed to explore the low-temperature properties and crossovers close to the field-induced quantum…”
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Two-time Green’s function treatment of field-induced quantum criticality of a -dimensional easy-plane ferromagnet with longitudinal uniform interactions by Campana, L.S., De Cesare, L., Esposito, U., Mercaldo, M.T.

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Quantum criticality of a d-dimensional spin- S XXZ ferromagnetic model with longitudinal infinite-range interactions by Campana, L.S., De Cesare, L., Esposito, U.

“…A d-dimensional spin- S XXZ ferromagnetic model with uniform long-range interactions in the z-direction is mapped into an effective XY model in a transverse…”
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Reward and detection thresholds for brain stimulation: dissociative effects of cocaine by Kornetsky, C, Esposito, R U

“…The effects of cocaine on both rewarding and detection thresholds for intracranial stimulation to the same brain sites in the same animals were determined. The…”
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Changes in Local Cerebral Glucose Utilization during Rewarding Brain Stimulation by Esposito, R. U., Porrino, L. J., Seeger, T. F., Crane, A. M., Everist, H. D., Pert, A.

“…The quantitative 2-deoxy[14C]glucose method was used to determine local cerebral glucose utilization in unrestrained rats responding (lever-press) for…”
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Effects of d-amphetamine and naloxone on brain stimulation reward by Esposito, R U, Perry, W, Kornetsky, C

“…Self-stimulation thresholds were determined in rats by means of a modification of the psychophysical method of limits. Reinforcement values were determined…”
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Cocaine: acute effects on reinforcement thresholds for self-stimulation behavior to the medial forebrain bundle by Esposito, R U, Motola, A H, Kornetsky, C

“…Reinforcing thresholds for self-stimulation behavior to the medial forebrain bundle were determined in rats by means of rate-free psychophysical method. The…”
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Quantum transfer-matrix approach to S = 1 antiferromagnetic chains at finite temperatures by Kamieniarz, G., Matysiak, R., D’Auria, A. Caramico, Esposito, F., Esposito, U.

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Effects of chronic naloxone treatment on brain-stimulation reward by Perry, W, Esposito, R U, Kornetsky, C

“…Rats were tested on a rate-free psychophysical procedure in order to determine the absolute reinforcement thresholds for self-stimulation behavior. The…”
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Compositeness criteria and equivalence between Lee models with Yukawa and with Fermi interactions by Esposito, F., Esposito, U.

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Effects of morphine on intracranial self-stimulation to various brain stem loci by Esposito, R U, McLean, S, Kornetsky, C

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A «quasi-renormalizable» model of field theory by Esposito, F., Esposito, U.

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