Erratum: The induced phase transition of a nonlinear oscillator interacting with a coherent electromagnetic field [JETP 83, 653–660 (1996)]

1997 ◽  
Vol 84 (2) ◽  
pp. 419
Author(s):  
P. I. Bardetskiı̆
Keyword(s):  
Phase Transition ◽  
Electromagnetic Field ◽  
Nonlinear Oscillator

Electromagnetic field in the nucleus and the Salam–Strathdee phase transitions

1978 ◽  
Vol 56 (1) ◽  
pp. 149-160 ◽  
Author(s):  
H. C. Lee ◽  
F. C. Khanna
Keyword(s):  
Phase Transition ◽  
Electromagnetic Field ◽  
Phase Transitions ◽  
Electromagnetic Fields ◽  
Normal Values ◽  
Cabibbo Angle ◽  
Existing Data

Electromagnetic fields in the interior of the nucleus (hypernucleus) as well as inside the constituent nucleons (hyperons) are calculated. The results are discussed in the context of the Salam–Strathdee phase transition in connection with the possible vanishing of the Cabibbo angle. We show that existing data constrain the minimal range of 'normal' values for the invariant [Formula: see text] to be [Formula: see text]. Interestingly, in many Λ-hypernuclei [Formula: see text] is outside this minimal range.

scholarly journals U(1) LATTICE GAUGE MODEL FOR UNCONVENTIONAL SUPERCONDUCTORS: LINK COOPER PAIR AS DUAL GAUGE FIELD

2008 ◽  
Vol 23 (33) ◽  
pp. 2821-2833 ◽  
Author(s):  
KENJI SAWAMURA ◽  
IKUO ICHINOSE ◽  
YUKI MORIBE
Keyword(s):  
Phase Transition ◽  
Electromagnetic Field ◽  
Gauge Field ◽  
Phase Structure ◽  
Cooper Pair ◽  
Three Dimensional ◽  
Gauge Model ◽  
Coulomb Interactions ◽  
Lattice Gauge ◽  
New Type

In this paper we study a new type of lattice gauge model that was proposed in the previous papers for describing unconventional superconductivity (SC). In this model, the Cooper-pair (CP) field is defined on lattice links in order to describe d-wave SC. The CP field can be regarded as a U(1) lattice gauge field dual to the electromagnetic field, and the SC (Higgs) phase transition takes place as a result of the phase coherence of the CP field. Effects of the long-range Coulomb interactions between the CPs and fluctuations of the electromagnetic field are taken into account. We investigate the phase structure of the model and the critical behavior by means of the Monte Carlo simulations. We find that the parameter, which controls the fluxes (vortices) of the CP, strongly influences the phase structure. In three-dimensional case, the model has rich phase structure. In particular, there is a "monopole proliferation" phase transition besides the SC phase transition. Depending on the parameters, this transition exists within the SC phase or takes place simultaneously with the SC transition. This new type of transition is relevant for unconventional SCs with strong spatial three-dimensionality and to be observed by experiments.

Microstructure of laser-irradiated, conducting Kapton polyimide

1995 ◽  
Vol 53 ◽  
pp. 502-503
Author(s):  
D. L. Callahan ◽  
Z. Ball ◽  
H. M. Phillips ◽  
R. Sauerbrey
Keyword(s):  
Electron Microscopy ◽  
Phase Transition ◽  
Transmission Electron Microscopy ◽  
Cross Section ◽  
Film Surface ◽  
Cross Sectional ◽  
General Utility ◽  
Transmission Electron ◽  
Considerable Debate ◽  
Potential Applications

Ultraviolet laser-irradiation can be used to induce an insulator-to-conductor phase transition on the surface of Kapton polyimide. Such structures have potential applications as resistors or conductors for VLSI applications as well as general utility electrodes. Although the percolative nature of the phase transformation has been well-established, there has been little definitive work on the mechanism or extent of transformation. In particular, there has been considerable debate about whether or not the transition is primarily photothermal in nature, as we propose, or photochemical. In this study, cross-sectional optical microscopy and transmission electron microscopy are utilized to characterize the nature of microstructural changes associated with the laser-induced pyrolysis of polyimide.Laser-modified polyimide samples initially 12 μm thick were prepared in cross-section by standard ultramicrotomy. Resulting contraction in parallel to the film surface has led to distortions in apparent magnification. The scale bars shown are calibrated for the direction normal to the film surface only.

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