Zobrazeno 1 - 10
of 1 287
pro vyhledávání: '"Smirnov, Vladimir A"'
Autor:
Smirnov, Vladimir A.
A short review of expansion by regions is presented. It is a well-known strategy to obtain an expansion of a given multiloop Feynman integral in a given limit where some kinematic invariants and/or masses have certain scaling measured in powers of a
Externí odkaz:
http://arxiv.org/abs/2406.11475
Autor:
Bern, Zvi, Herrmann, Enrico, Roiban, Radu, Ruf, Michael S., Smirnov, Alexander V., Smirnov, Vladimir A., Zeng, Mao
We compute the potential-graviton contribution to the scattering amplitude, the radial action, and the scattering angle of two extremal black holes in N = 8 supergravity at the fifth post-Minkowskian order to next-to-leading order in a large mass exp
Externí odkaz:
http://arxiv.org/abs/2406.01554
Autor:
Smirnov, Vladimir A., Wunder, Fabian
We study the small-mass asymptotic behavior of so-called angular integrals, appearing in phase-space calculations in perturbative quantum field theory. For this purpose we utilize the strategy of expansion by regions, which is a universal method both
Externí odkaz:
http://arxiv.org/abs/2405.13120
Autor:
Stasenko, Sergey V., Mikhaylov, Alexey N., Fedotov, Alexander A., Smirnov, Vladimir A., Kazantsev, Victor B.
A mathematical model of a spiking neuron network accompanied by astrocytes is considered. The network is composed of excitatory and inhibitory neurons with synaptic connections supplied by a memristor-based model of plasticity. Another mechanism for
Externí odkaz:
http://arxiv.org/abs/2402.10214
We calculate the total Born cross section of the $e^+e^-$-pair production by an electron in the field of a nucleus (trident process) using the modern multiloop methods. For general energies we obtain the cross section in terms of converging power ser
Externí odkaz:
http://arxiv.org/abs/2309.02904
Autor:
Lee, Roman N., von Manteuffel, Andreas, Schabinger, Robert M., Smirnov, Alexander V., Smirnov, Vladimir A., Steinhauser, Matthias
We present analytical results for all master integrals for massless three-point functions, with one off-shell leg, at four loops. Our solutions were obtained using differential equations and direct integration techniques. We review the methods and pr
Externí odkaz:
http://arxiv.org/abs/2309.00054
Autor:
Bern, Zvi, Herrmann, Enrico, Roiban, Radu, Ruf, Michael S., Smirnov, Alexander V., Smirnov, Vladimir A., Zeng, Mao
We compute the potential-photon contributions to the classical relativistic scattering angle of two charged non-spinning bodies in electrodynamics through fifth order in the coupling. We use the scattering amplitudes framework, effective field theory
Externí odkaz:
http://arxiv.org/abs/2305.08981
Autor:
Morozov, Nikita F., Zemtsova, Elena G., Kudymov, Vladimuir K., Morozov, Pavel E., Semenov, Boris Nikolaevich, Yurchuk, Denis V., Smirnov, Vladimir M.
Publikováno v:
Известия Саратовского университета. Новая серия. Серия Математика. Механика. Информатика, Vol 24, Iss 1, Pp 97-108 (2024)
For obtaining new metal matrix composites, one needs to develop approaches to the selection of reinforcing additives, the identification of the relationship of the properties of the resulting material with the composition, concentration and morpholog
Externí odkaz:
https://doaj.org/article/7da645ea4e2f49279522146b2873f1ad
Autor:
Chakraborty, Amlan, Huber, Tobias, Lee, Roman N., von Manteuffel, Andreas, Schabinger, Robert M., Smirnov, Alexander V., Smirnov, Vladimir A., Steinhauser, Matthias
We compute the four-loop corrections to the Higgs-bottom vertex within massless QCD and present analytic results for all color structures. The infrared poles of the renormalized form factor agree with the predicted four-loop pattern. Furthermore, we
Externí odkaz:
http://arxiv.org/abs/2204.02422