scholarly journals Fermionic Squeezed State for the O(4) Model as a Schematic Model in a Many-Fermion System

2004 ◽  
Vol 112 (4) ◽  
pp. 583-601 ◽  
Author(s):  
H. Akaike ◽  
Y. Tsue ◽  
S. Nishiyama
Keyword(s):  
Schematic Model ◽  
Fermion System ◽  
Squeezed State

FUNCTIONAL HETEROGENEITY OF THE THYROID AND POSSIBLE PRESENCE OF IODOTYROSINE-LIKE COMPOUNDS IN NORMAL SERUM

1965 ◽  
Vol 48 (2) ◽  
pp. 199-208 ◽  
Author(s):  
J. D. Wiener
Keyword(s):  
Human Subjects ◽  
Thyroid Tissue ◽  
Normal Serum ◽  
Schematic Model ◽  
Functional Heterogeneity ◽  
Rat Serum ◽  
Iodine Metabolism ◽  
Normal Rat ◽  
Isotope Equilibrium ◽  
Equilibrium Experiment

ABSTRACT After the administration of 131I to normal animals or human subjects, labelled thyroxine and triiodothyronine, but at most traces of labelled iodotyrosines can be detected in the serum. However, several investigators using various methods claim to have found considerable amounts of one or both of these iodotyrosines when assaying the stable (non-radioactive) iodinated compounds in the serum. Considering the available evidence as convincing for the present, an attempt has been made to explain this discrepancy. A schematic model of the thyroidal iodine metabolism is proposed, based on (a) the hypothesis that the iodotyrosines are present in the circulation in a »masked« form (i. e. protected against deiodination), and (b) the known functional heterogeneity of the thyroid tissue. This heterogeneity should be of a qualitative as well as quantitative nature. As the physical decay rate of 131I is short in comparison with the turnover rate of the masked iodotyrosine pool, an isotope equilibrium experiment with rats was carried out, using the long-lived isotope 125I. The results of this experiment, viewed together with those of a similar investigation published by others, seem to lend support to the proposed mechanism. The presence of non-negligible amounts of a diiodotyrosine-like compound in normal rat serum seems fairly well established.

INTERMEDIATE NUMBER-SQUEEZED STATE OF THE QUANTIZED RADIATION FIELD

1995 ◽  
Vol 09 (25) ◽  
pp. 1673-1683 ◽  
Author(s):  
B. BASEIA ◽  
A.F. DE LIMA ◽  
A.J. DA SILVA
Keyword(s):  
Radiation Field ◽  
Intermediate State ◽  
Phase State ◽  
Squeezed State ◽  
Number State ◽  
Binomial State ◽  
Quantized Radiation Field

Following previous strategies by Stoler et al. which introduced the binomial state and Baseia et al. which introduced the intermediate number phase state, we introduce a new intermediate state of the quantized radiation field, which reduces to the number state and squeezed state in two different limits. This interpolating state exhibits nonclassical effects as sub-Poissonian, antibunching and squeezing, obtained from the corresponding expressions as function of the interpolating parameters.

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