376 research outputs found
Transverse spin dynamics in a spin-polarized Fermi liquid
The linear equations for transverse spin dynamics in weakly polarised
degenerate Fermi liquid with arbitrary relationship between temperature and
polarization are derived from Landau-Silin phenomenological kinetic equation
with general form of two-particle collision integral. The temperature and
polarization dependence of the spin current relaxation time is established. It
is found in particular that at finite polarization transverse spin wave damping
has a finite value at T=0. The analogy between temperature dependences of spin
waves attenuation and ultrasound absorption in degenerate Fermi liquid at
arbitrary temperature is presented. We also discuss spin-polarized Fermi liquid
in the general context of the Fermi-liquid theory and compare it with "Fermi
liquid" with spontaneous magnetization.Comment: 10 page
Ultrasound-Assisted Osmotic Dehydration of Strawberries: Effect of Pretreatment Time and Ultrasonic Frequency
Assessment of the probability of colonization of local spider communities in an experimental landscape
[Accepted Manuscript] The duration of protection of school-aged BCG vaccination in England: a population -based case–control study
An Inflationary Scenario Taking into Account of Possible Dark Energy Effects in the Early Universe
We investigate the possible effect of cosmological-constant type dark energy
during the inflation period of the early universe. This is accommodated by a
new dispersion relation in de Sitter space. The modified inflation model of a
minimally-coupled scalar field is still able to yield an observation-compatible
scale-invariant primordial spectrum, simultaneously having potential to
generate a spectrum with lower power at large scales. A qualitative match to
the WMAP 7-year data is presented. We obtain an of the same
order of that in the -CDM model. Possible relations between the de
Sitter scenario and the Doubly Special Relativity(DSR) are also discussed.Comment: 17 pages, 3 figuire
Teores de nutrientes na folha e nos grãos de aveia-preta em função da adubação com fósforo e potássio
Evaluation of cytotoxicity and genotoxicity of Hancornia speciosa latex in Allium cepa root model
Flood pulse and spatial dynamics of mercury in sediments in Puruzinho lake, Brazilian Amazon
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