Results 31 to 40 of about 171,914 (268)

Angular trispectra of CMB temperature and polarization [PDF]

open access: yesPhysical Review D, 2002
We develop the formalism necessary to study four-point functions of the cosmic microwave background (CMB) temperature and polarization fields. We determine the general form of CMB trispectra, with the constraints imposed by the assumption of statistical isotropy of the CMB fields, and derive expressions for their estimators, as well as their Gaussian ...
Okamoto, Takemi, Hu, Wayne
openaire   +2 more sources

Temperature and polarization patterns in anisotropic cosmologies [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2011
24 pages, 7 Figures, submitted to JCAP. Revised version: numerous references added, text rewritten, and errors corrected.
Sung, Rockhee, Coles, Peter
openaire   +2 more sources

Indirect Evaluation of the Electrocaloric Effect in PbZrTiO3 (20/80)-Based Epitaxial Thin Film Structures

open access: yesElectronic Materials, 2022
Electrocaloric effect is the adiabatic temperature change in a dielectric material when an electric field is applied or removed, and it can be considered as an alternative refrigeration method. Materials with ferroelectric order exhibit large temperature
Georgia A. Boni   +7 more
doaj   +1 more source

Study on Nonlinear Dielectric Properties of Micro Silica

open access: yesEnergies, 2023
Inorganic insulating powder can potentially be used in nuclear power plant cables, fire-resistant cables, and so on due to its high heat resistance and radiation resistance. It is of great academic and engineering value to study the dielectric properties
Yucui Xue   +5 more
doaj   +1 more source

Seasonal evolution of Saturn’s polar temperatures and composition [PDF]

open access: yesIcarus, 2015
The seasonal evolution of Saturn's polar atmospheric temperatures and hydrocarbon composition is derived from a decade of Cassini Composite Infrared Spectrometer (CIRS) 7-16 $μ$m thermal infrared spectroscopy. We construct a near-continuous record of atmospheric variability poleward of 60$^\circ$ from northern winter/southern summer (2004, $L_s=293 ...
Fletcher, Leigh Nicholas   +9 more
openaire   +3 more sources

Study on Temperature Characteristics of Ceramic Materials for Piezoelectric Actuators and Model Modification

open access: yesXibei Gongye Daxue Xuebao, 2019
The performance of piezoelectric actuator ceramics under strong electric field(20 kV/cm) and variable temperature (30~150℃) were tested on a piezoelectric ceramic thermo-electro-mechanical multi-field loading test bench. The variation of hysteresis loop,

doaj   +1 more source

Temperature-polarization correlations from tensor fluctuations [PDF]

open access: yesPhysical Review D, 1995
5 pages, revtex, 5 figures, compressed and ...
Crittenden, R. G.   +2 more
openaire   +3 more sources

High-Temperature Ferroelectric Behavior of Al0.7Sc0.3N

open access: yesMicromachines, 2022
Currently, there is a lack of nonvolatile memory (NVM) technology that can operate continuously at temperatures > 200 °C. While ferroelectric NVM has previously demonstrated long polarization retention and >1013 read/write cycles at room temperature, the
Daniel Drury   +4 more
doaj   +1 more source

Spin-thermal shear coupling in a relativistic fluid

open access: yesPhysics Letters B, 2021
We show that spin polarization of a fermion in a relativistic fluid at local thermodynamic equilibrium can be generated by the symmetric derivative of the four-temperature vector, defined as thermal shear.
F. Becattini, M. Buzzegoli, A. Palermo
doaj   +1 more source

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