2,109 research outputs found
Nonlocal transport in the charge density waves of -TaS
We studied the nonlocal transport of a quasi-one dimensional conductor
-TaS. Electric transport phenomena in charge density waves include the
thermally-excited quasiparticles, and collective motion of charge density waves
(CDW). In spite of its long-range correlation, the collective motion of a CDW
does not extend far beyond the electrodes, where phase slippage breaks the
correlation. We found that nonlocal voltages appeared in the CDW of
-TaS, both below and above the threshold field for CDW sliding. The
temperature dependence of the nonlocal voltage suggests that the observed
nonlocal voltage originates from the CDW even below the threshold field.
Moreover, our observation of nonlocal voltages in both the pinned and sliding
states reveals the existence of a carrier with long-range correlation, in
addition to sliding CDWs and thermally-excited quasiparticles.Comment: 8 pages, 4 figure
Construction of a model of the Venus surface and its use in processing radar observations
An algorithm is described for constructing the model of the Venus surface as an expansion in spherical functions. The relief expansion coefficients were obtained up to the coefficient S sub 99. The surface picture representation is given according to this expansion. The surface model constructed was used for processing radar observations. The use of the surface model allows improved agreement between the design and measured values of radar ranges
Generalized Green Functions and current correlations in the TASEP
We study correlation functions of the totally asymmetric simple exclusion
process (TASEP) in discrete time with backward sequential update. We prove a
determinantal formula for the generalized Green function which describes
transitions between positions of particles at different individual time
moments. In particular, the generalized Green function defines a probability
measure at staircase lines on the space-time plane. The marginals of this
measure are the TASEP correlation functions in the space-time region not
covered by the standard Green function approach. As an example, we calculate
the current correlation function that is the joint probability distribution of
times taken by selected particles to travel given distance. An asymptotic
analysis shows that current fluctuations converge to the process.Comment: 46 pages, 3 figure
Temperature, pressure and density of Venus' atmosphere according to measurement data of the AIS Venera-4
Atmospheric temperature, pressure, and density of Venus according to measurements obtained by AIS Venera-
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