Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Peletminskii, A. S."'
We develop a general kinetic approach to studying high-frequency collective excitations in arbitrary-spin quantum gases. To this end, we formulate a many-body Hamiltonian that includes the multipolar exchange interaction as well as the coupling of a
Externí odkaz:
http://arxiv.org/abs/2409.16995
Publikováno v:
J. Phys. A: Math. Theor. 56 435001 (2023)
In the context of quantum gases, we obtain a many-body Hamiltonian for spin-3/2 atoms with general multipole (spin, quadrupole, and octupole) exchange interaction by employing the apparatus of irreducible spherical tensor operators. This Hamiltonian
Externí odkaz:
http://arxiv.org/abs/2305.14043
Publikováno v:
J. Phys. A: Math. Theor. 55 405003 (2022)
We theoretically study a weakly interacting gas of spin-1 atoms with Bose-Einstein condensate in external magnetic field within the Bogoliubov approach. To this end, in contrast to previous studies, we employ the general Hamiltonian, which includes b
Externí odkaz:
http://arxiv.org/abs/2112.03128
Publikováno v:
J. Phys. A: Math. Theor. 54 165001 (2021)
We obtain and justify a many-body Hamiltonian of pairwise interacting spin-1 atoms, which includes eight generators of the SU(3) group associated with spin and quadrupole degrees of freedom. It is shown that this Hamiltonian is valid for non-local in
Externí odkaz:
http://arxiv.org/abs/2012.01078
Publikováno v:
Phys. Scr. 96 (2021) 045401
We study thermodynamic properties of weakly interacting Bose gases above the transition temperature of Bose-Einstein condensation in the framework of a thermodynamic perturbation theory. Cases of local and non-local interactions between particles are
Externí odkaz:
http://arxiv.org/abs/2011.05628
Publikováno v:
Physics Letters A, v. 384, issue 31, 126798 (2020)
We study a many-body system of interacting spin-1 particles in the context of homogeneous gases of ultracold atoms. In general, its description requires eight parameters among which there are three components of magnetization and five parameters asso
Externí odkaz:
http://arxiv.org/abs/1911.11391
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. v.50, 145301 (2017)
We study a many-body system of interacting fermionic atoms of two species that are in thermodynamic equilibrium with their condensed heteronuclear bound states (molecules). In order to describe such an equilibrium state, we use a microscopic approach
Externí odkaz:
http://arxiv.org/abs/1501.01177
The main goal of the present article is to extend the Bogolyubov method for deriving kinetic equations to dissipative many-body systems. The basic conjecture underlying the Bogolyubov approach is the functional hypothesis, according to which, the man
Externí odkaz:
http://arxiv.org/abs/1307.3466
Role of single-particle and pair condensates in Bose systems with arbitrary intensity of interaction
Publikováno v:
Condens. Matter Phys., 2013, vol. 16, No. 1, 13603:1-17
We study a superfluid Bose system with single-particle and pair condensates on the basis of a half-phenomenological theory of a Bose liquid not involving the weakness of interparticle interaction. The coupled equations describing the equilibrium stat
Externí odkaz:
http://arxiv.org/abs/1303.5539
Autor:
Peletminskii, A. S.
Publikováno v:
J. Phys. A: Math. Theor. 42, 045501 (2009)
We present a phenomenological Lagrangian and Poisson brackets for obtaining nondissipative hydrodynamic theory of supersolids. A Lagrangian is constructed on the basis of unification of the principles of non-equilibrium thermodynamics and classical f
Externí odkaz:
http://arxiv.org/abs/0802.1991