Zobrazeno 1 - 10
of 109
pro vyhledávání: '"Yurovsky, Vladimir A."'
Autor:
Yurovsky, Vladimir A.
Publikováno v:
SciPost Phys. 15, 221 (2023)
A set of zero-range scatterers along its axis lifts the integrability of a harmonic waveguide. Effective solution of the Schr\"odinger equation for this model is possible due to the separable nature of the scatterers and millions of eigenstates can b
Externí odkaz:
http://arxiv.org/abs/2301.06065
Autor:
Yurovsky, Vladimir A.
Publikováno v:
Phys. Rev. Lett. 130, 020404 (2023)
A gas of interacting particles is a paradigmatic example of chaotic systems. It is shown here that even if all but one particle are fixed in generic positions, the excited states of the moving particle are chaotic. They are characterized by the numbe
Externí odkaz:
http://arxiv.org/abs/2208.00039
Autor:
Luo, De, Jin, Yi, Nguyen, Jason H. V., Malomed, Boris A., Marchukov, Oleksandr V., Yurovsky, Vladimir A., Dunjko, Vanja, Olshanii, Maxim, Hulet, R. G.
Publikováno v:
Phys. Rev. Lett. 125, 183902 (2020)
We report the creation of quasi-1D excited matter-wave solitons, "breathers", by quenching the strength of the interactions in a Bose-Einstein condensate with attractive interactions. We characterize the resulting breathing dynamics and quantify the
Externí odkaz:
http://arxiv.org/abs/2007.03766
Autor:
Marchukov, Oleksandr V., Malomed, Boris A., Dunjko, Vanja, Ruhl, Joanna, Olshanii, Maxim, Hulet, Randall G., Yurovsky, Vladimir A.
Publikováno v:
Phys. Rev. Lett. 125, 050405 (2020)
We study quantum fluctuations of macroscopic parameters of an NLS breathers, i.e., the second-order soliton solution of the nonlinear Schr\"odinger equation. Uncertainty relations for the parameters are derived and compared to similar relations for f
Externí odkaz:
http://arxiv.org/abs/1911.01369
Autor:
Marchukov, Oleksandr V., Malomed, Boris A., Yurovsky, Vladimir A., Olshanii, Maxim, Dunjko, Vanja, Hulet, Randall G.
Publikováno v:
Phys. Rev. A 99, 063623 (2019)
We consider evolution of one-dimensional nonlinear-Schr\"odinger (NLS) two-soliton complexes (breathers) with narrow repulsive or attractive potentials (barrier or well, respectively). By means of systematic simulations, we demonstrate that the breat
Externí odkaz:
http://arxiv.org/abs/1904.10853
Publikováno v:
Phys. Rev. Lett. 119, 220401 (2017)
We use the ab initio Bethe Ansatz dynamics to predict the dissociation of one-dimensional cold-atom breathers that are created by a quench from a fundamental soliton. We find that the dissociation is a robust quantum many-body effect, while in the me
Externí odkaz:
http://arxiv.org/abs/1706.07114
Autor:
Yurovsky, Vladimir A.
Publikováno v:
Phys. Rev. Lett. 118, 200403 (2017)
Second-order phase transitions have no latent heat and are characterized by a change in symmetry. In addition to the conventional symmetric and anti-symmetric states under permutations of bosons and fermions, mathematical group-representation theory
Externí odkaz:
http://arxiv.org/abs/1609.02180
Publikováno v:
Phys. Rev. A 94, 033848 (2016)
We study a model describing competition of interactions between $N$ two-level systems (TLSs) against decoherence. We apply it to analyze dye molecules in an optical microcavity, where molecular vibrations provide a local source for decoherence. Most
Externí odkaz:
http://arxiv.org/abs/1604.08637
Autor:
Yurovsky, Vladimir A.
Publikováno v:
Phys. Rev. A 93, 023613 (2016)
Many-body eigenfunctions of the total spin operator can be constructed from the spin and spatial wavefunctions with non-trivial permutation symmetries. Spin-dependent interactions can lead to relaxation of the spin eigenstates to the thermal equilibr
Externí odkaz:
http://arxiv.org/abs/1509.01264
Autor:
Yurovsky, Vladimir A.
Publikováno v:
Phys. Rev. A 92, 033618 (2015)
Sums of matrix elements of spin-dependent two-body momentum-independent interactions and sums of their products are calculated analytically in the basis of many-body states with given total spin --- the states built from spin and spatial wavefunction
Externí odkaz:
http://arxiv.org/abs/1506.01268