Zobrazeno 1 - 10
of 222
pro vyhledávání: '"Derkach, V. P."'
We propose a general approach for deriving transparent boundary conditions for the stationary Schroedinger equation with arbitrary potential. It is proven that the transparent boundary conditions can be written in terms of the Weyl-Titchmarsh coeffic
Externí odkaz:
http://arxiv.org/abs/2410.10232
Identifying multi-exciton states generated from singlet fission is key to understanding the carrier multiplication process, which presents a strategy for improving the efficiency of photovoltaics and bio-imaging. Broadband optically detected magnetic
Externí odkaz:
http://arxiv.org/abs/2406.09268
Publikováno v:
Phys. Rev. B 108, 155405 (2023)
We investigate the physical mechanisms for spin-dependent recombination of a strongly bound pair of triplet excitons generated by singlet fission and forming a spin quintet (total spin of two) bi-exciton. For triplet excitons the spin-dependent recom
Externí odkaz:
http://arxiv.org/abs/2302.04678
An isometric operator V in a Pontryagin space H is called standard, if its domain and the range are nondegenerate subspaces in H. A description of coresolvents for standard isometric operators is known and basic underlying concepts that appear in the
Externí odkaz:
http://arxiv.org/abs/2012.13812
Autor:
Rybalko, A. S., Rubets, S. P., Rudavskii, E. Ya., Golovashchenko, R. V., Tarapov, S. I., Derkach, V. N., Khodusov, V. D., Naumovets, A. S., Nurmagambetov, A. J.
We conducted series of experiments on observing a Stark-type effect in superfluid $^4$He in presence of relative laminar flows of the normal and superfluid components. It is designed a measurement cell which allows us to simultaneously create hydrody
Externí odkaz:
http://arxiv.org/abs/2009.06036
Autor:
Derkach, V., Kovalyov, I.
Full indefinite Stieltjes moment problem is studied via the step-by-step Schur algorithm. Naturally associated with indefinite Stieltjes moment problem are generalized Stieltjes continued fraction and a system of difference equations, which, in turn,
Externí odkaz:
http://arxiv.org/abs/2002.07456
Akademický článek
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Autor:
Yunusova, K. M., Bayliss, S. L., Chanelière, T., Derkach, V., Anthony, J. E., Chepelianskii, A. D., Weiss, L. R.
Publikováno v:
Phys. Rev. Lett. 125, 097402 (2020)
In organic semiconductors, bi-excitons are key intermediates in carrier-multiplication and exciton annihilation. Their local geometry governs their electronic properties and yet has been challenging to determine. Here, we access the structure of the
Externí odkaz:
http://arxiv.org/abs/1912.04191
Akademický článek
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Autor:
Rybalko, A. S., Rubets, S. P., Rudavskii, E. Ya., Tikhiy, V. A., Golovachenko, R., Derkach, V. N., Tarapov, S. I.
A new effect of electromagnetic radiation generated by heat flow in superfluid helium has been detected experimentally. The generating heat flow was produced using hydrodynamic thermal guns. Electromagnetic radiation was registered with a dielectric
Externí odkaz:
http://arxiv.org/abs/0811.2114