Zobrazeno 1 - 10
of 1 196
pro vyhledávání: '"Bogolubov, P."'
Autor:
Yukalov, V. I., Yukalova, E. P.
Publikováno v:
Phys. Part. Nucl. 51 (2020) 823-828
The Hohenberg-Martin dilemma of conserving versus gapless theories for systems with Bose-Einstein condensate is considered. This dilemma states that, generally, a theory characterizing a system with broken global gauge symmetry, which is necessary fo
Externí odkaz:
http://arxiv.org/abs/2105.14966
Autor:
Teretenkov, A. E.
Publikováno v:
J. Phys. A: Math. Theor. 54 (2021) 265302
We study the perturbative corrections to the { Gorini-Kossakowski-Sudarshan-Lindblad equation which arises in the weak coupling limit}. The spin-boson model in the rotating wave approximation at zero temperature is considered. We show that the pertur
Externí odkaz:
http://arxiv.org/abs/2008.02820
Autor:
Tsintsadze, L. N., Tsintsadze, N. L.
We demonstrate that a dispersion relation of elementary excitations in the Fermi liquid as a superconductor is identical to the one in a quantum liquid HeII. Hence, we show that the superconductivity is, in fact, the same as superfluidity, but for ch
Externí odkaz:
http://arxiv.org/abs/1904.04642
We consider the Bogolubov-de Gennes equations giving an equivalent formulation of the BCS theory of superconductivity. We are interested in the case when the magnetic field is present. We (a) discuss their general features, (b) isolate key physical c
Externí odkaz:
http://arxiv.org/abs/1701.06080
Publikováno v:
Math. Phys. Anal. Geom. 19, Art. 13 (2016)
We consider the Bogolubov-Hartree-Fock functional for a fermionic many-body system with two-body interactions. For suitable interaction potentials that have a strong enough attractive tail in order to allow for two-body bound states, but are otherwis
Externí odkaz:
http://arxiv.org/abs/1511.08047
Akademický článek
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The boson-fermion (BF) model has been proposed to describe superconductivity in short coherence length superconductors. In this work we use it to study impurity induced inhomogeneities in high temperature superconductors (HTS) as found in numerous sc
Externí odkaz:
http://arxiv.org/abs/0803.0683
Autor:
Arbuzov, Boris A.
Publikováno v:
Phys.Lett.B656:67-73,2007
We apply Bogolubov approach to QCD to demonstrate a spontaneous generation of three-gluon gauge invariant effective interaction which contributes significantly at the infrared region. The contribution of this interaction to $\alpha_s(p^2)$ leads to d
Externí odkaz:
http://arxiv.org/abs/hep-ph/0703237
Publikováno v:
Journal of Modern Optics 47, 2629-2644 (2000).
We propose an efficient stochastic method to implement numerically the Bogolubov approach to study finite-temperature Bose-Einstein condensates. Our method is based on the Wigner representation of the density matrix describing the non condensed modes
Externí odkaz:
http://arxiv.org/abs/cond-mat/0004046
Publikováno v:
Found.Phys. 33 (2003) 87-110
The structure of the thermal equilibrium state of a weakly interacting Bose gas is of current interest. We calculate the density matrix of that state in two ways. The most effective method, in terms of yielding a simple, explicit answer, is to constr
Externí odkaz:
http://arxiv.org/abs/gr-qc/0207032