Zobrazeno 1 - 10
of 13
pro vyhledávání: '"G. G. Varzugin"'
Publikováno v:
Journal of Optics B: Quantum and Semiclassical Optics. 6:S392-S396
A generic mechanism of collapse in the Gross–Pitaevskii equation with attractive interparticle interactions is gained by reformulating this equation as Newton's equation of motion for a system of particles with a constraint. 'Quantum pressure' effe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63c6cd0091903019cfb46b861d1bcc82
https://doi.org/10.1088/1464-4266/6/5/029
https://doi.org/10.1088/1464-4266/6/5/029
Autor:
R. K. Bullough, C. Malyshev, V. S. Kapitonov, M. Lindberg, Jussi Timonen, Andrei Rybin, G. G. Varzugin, N. M. Bogolyubov
Publikováno v:
Theoretical and Mathematical Physics. 134:47-61
We evaluate finite-temperature equilibrium correlators $$\langle T_\tau \hat \psi ({\text{r}}_{\text{1}} )\hat \psi ^\dag ({\text{r}}_{\text{2}} )\rangle $$ for thermal time τ ordered Bose fields $$\hat \psi ,{\text{ }}\hat \psi ^\dag $$ to good app
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::670ca889927330f8471c3b9b1a870d82
https://doi.org/10.1023/a:1021815606105
https://doi.org/10.1023/a:1021815606105
Autor:
A. S. Chistyakov, G. G. Varzugin
Publikováno v:
Classical and Quantum Gravity. 19:4553-4564
Axially symmetric, stationary solutions of the Einstein-Maxwell equations with disconnected event horizon are studied by developing a method of explicit integration of the corresponding boundary-value problem. This problem is reduced to non-leaner sy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f4d3d6fa5ec28280a4d5a8c16789cab
https://doi.org/10.1088/0264-9381/19/17/307
https://doi.org/10.1088/0264-9381/19/17/307
Publikováno v:
Journal of Physics A: Mathematical and General. 34:10463-10474
We use the classical N-soliton solution of a q-deformed lattice, the Maxwell-Bloch (MB) lattice, which we reported recently (Rybin A V, Varzugin G G, Timonen J and Bullough R K Year 2001 J. Phys. A: Math. Gen. 34 157) in order, ultimately, to fully c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78451d2d2b71398e080425e95c2a0c89
https://doi.org/10.1088/0305-4470/34/48/311
https://doi.org/10.1088/0305-4470/34/48/311
Publikováno v:
Journal of Physics A: Mathematical and General. 34:157-164
We report for the first time exact solutions of a completely integrable nonlinear lattice system for which the dynamical variables satisfy a q-deformed Lie algebra - the Lie-Poisson algebra su_q(2). The system considered is a q-deformed lattice for w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be9d6656c3362eefeaa9c6073ee36b8e
https://doi.org/10.1088/0305-4470/34/1/312
https://doi.org/10.1088/0305-4470/34/1/312
Autor:
G. G. Varzugin
Publikováno v:
Journal of Mathematical Physics. 37:5869-5892
A classical method of stationary phase for oscillatory integrals is generalized to oscillatory Riemann–Hilbert problems of the kind arising in the theory of integrable nonlinear equations. The proposed approach is developed for the phase with N fir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2e0bee907920211cb7035bb09cbcf00
https://doi.org/10.1063/1.531706
https://doi.org/10.1063/1.531706
Publikováno v:
Theoretical and Mathematical Physics. 104:1166-1177
The investigation of the boundary-value problem on a half-plane for the two-dimensional stationary Heisenberg magnet is continued. The asymptotic behavior of “N-soliton” solutions is discussed. The asymptotic contribution of the continuous spectr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8bc8ccec61aacc79f857478f5d5e84b
https://doi.org/10.1007/bf02068748
https://doi.org/10.1007/bf02068748
Publikováno v:
Physica D: Nonlinear Phenomena. 54:351-395
Asymptotics of the temperature time-dependent correlation function of two fields one-dimensional bosons with infinite point-like repulsion is calculated.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8b68f228d32703c20b37a5b98202cb2
https://doi.org/10.1016/0167-2789(92)90043-m
https://doi.org/10.1016/0167-2789(92)90043-m
Publikováno v:
Physical Review A. 69
We study the mechanisms of collapse of the condensate wave function in the Gross-Pitaevskii theory with attractive interparticle interaction. We reformulate the Gross-Pitaevskii equation as Newton's equations for a flux of particles, and introduce th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a204fe518caef3cb2c7fc0972cbe8ba
https://doi.org/10.1103/physreva.69.023607
https://doi.org/10.1103/physreva.69.023607
Autor:
G. G. Varzugin
The inverse scattering method is applied to the investigation of the equilibrium configuration of black holes. A study of the boundary problem corresponding to this configuration shows that any axially symmetric, stationary solution of the Einstein e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::926897b18f489df0fd4997f0cf7a8082
http://arxiv.org/abs/gr-qc/0004073
http://arxiv.org/abs/gr-qc/0004073
