Zobrazeno 1 - 10
of 310
pro vyhledávání: '"Dmitriev, V V"'
Publikováno v:
Phys. Atom. Nuclei 86 (2023) 913-916
We investigate a nonlinear response of the physical vacuum by the example of the third harmonic in radiation of the electron-positron-photon plasma excited by a strong time dependent electric field at the focus spot of counterpropagating laser pulses
Externí odkaz:
http://arxiv.org/abs/2406.10257
Publikováno v:
Phys. Rev. B107, 024507 (2023)
We present results of high magnetic field experiments in pure $^3$He (in the absence of $^4$He coverage) in nematic aerogel. In this case the aerogel strands are covered with few atomic layers of solid paramagnetic $^3$He, which enables the spin-exch
Externí odkaz:
http://arxiv.org/abs/2211.06174
Autor:
Blaschke, D. B., Dmitriev, V. V., Gevorgyan, N. T., Mahato, B., Panferov, A. D., Smolyansky, S. A., Tseryupa, V. A.
Publikováno v:
Springer Proceedings in Physics, vol 281, p. 187 (Springer, Cham, 2022)
The effective mass approximation is analysed in a nonperturbative kinetic theory approach to strong field excitations in graphene [1,2]. This problem is highly actual for the investigation of quantum radiation from graphene [3], where the collision i
Externí odkaz:
http://arxiv.org/abs/2201.10594
Publikováno v:
Phys. Rev. Lett. 127, 265301 (2021)
We report the first observation of superfluid $\beta$ phase of $^3$He. This phase is realized in $^3$He in nematic aerogel in presence of high magnetic field right below the superfluid transition temperature. We use a vibrating aerogel resonator to d
Externí odkaz:
http://arxiv.org/abs/2012.06302
Publikováno v:
JETP Letters 112, 780 (2020)
We present experiments on nematic aerogel oscillating in superfluid $^3$He. This aerogel consists of nearly parallel mullite strands and is attached to a vibrating wire moving along the direction of the strands. Previous nuclear magnetic resonance ex
Externí odkaz:
http://arxiv.org/abs/2011.13747
Autor:
Dmitriev, V. V., Kutuzov, M. S., Mikheev, A. Y., Morozov, V. N., Soldatov, A. A., Yudin, A. N.
Publikováno v:
Phys. Rev. B 102, 144507 (2020)
We report results of experiments with liquid $^3$He confined in a high porosity anisotropic nanostructure which we call planar aerogel. This aerogel consists of nanofibers (with diameters $\sim10$ nm) which are randomly oriented in the plane normal t
Externí odkaz:
http://arxiv.org/abs/2008.10283
We present a detailed analysis of the self-consistent system of kinetic equations (KEs) describing electron-positron pair production from vacuum under the action of a spatially homogeneous time-dependent electric field of arbitrary polarization. The
Externí odkaz:
http://arxiv.org/abs/2004.02179
Publikováno v:
JETP Lett. v.110, 734 (2019)
We present results of nuclear magnetic resonance (NMR) experiments in superfluid 3He in two samples of nematic aerogel consisting of nearly parallel mullite strands. The samples were cut from the same piece of the aerogel, but one of them was squeeze
Externí odkaz:
http://arxiv.org/abs/1911.01193
Akademický článek
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Publikováno v:
JETP Letters 108, 816 (2018)
Magnetic materials generate demagnetizing field that depends on geometry of the sample and results in a shift of magnetic resonance frequency. This phenomenon should occur in porous nanostructures as well, e.g., in globally anisotropic aerogels. Here
Externí odkaz:
http://arxiv.org/abs/1811.08208