Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Oelkers, N."'
Publikováno v:
Phys. Rev. Lett. 96, 210402 (2006)
The low energy properties of the one-dimensional anyon gas with $\delta$-function interaction are discussed in the context of its Bethe ansatz solution. It is found that the anyonic statistical parameter and the dynamical coupling constant induce Hal
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603643
Publikováno v:
Adv. Phys. 56 (2007) 465
(abbreviated) This article considers recent advances in the investigation of the thermal and magnetic properties of integrable spin ladder models and their applicability to the physics of real compounds. The ground state properties of the integrable
Externí odkaz:
http://arxiv.org/abs/cond-mat/0512489
Publikováno v:
J. Stat. Mech. (2006) P03016
We investigate the elementary excitations of charge and spin degrees for the 1D interacting two-component Bose and Fermi gases by means of the discrete Bethe ansatz equations. Analytic results in the limiting cases of strong and weak interactions are
Externí odkaz:
http://arxiv.org/abs/cond-mat/0512486
We investigate thermal and magnetic properties of the double spin chain compound KCuCl_3 via an exactly solved ladder model with strong rung interaction. Results from the analysis of the thermodynamic Bethe Ansatz equations suggests the critical fiel
Externí odkaz:
http://arxiv.org/abs/cond-mat/0511725
Publikováno v:
J. Phys. A 39 (2006) 1073-1098
We extend the exact periodic Bethe Ansatz solution for one-dimensional bosons and fermions with delta-interaction and arbitrary internal degrees of freedom to the case of hard wall boundary conditions. We give an analysis of the ground state properti
Externí odkaz:
http://arxiv.org/abs/cond-mat/0511694
Publikováno v:
J. Stat. Mech. (2005) L10001
We provide evidence in support of a recent proposal by Astrakharchik at al. for the existence of a super Tonks-Girardeau gas-like state in the attractive interaction regime of quasi-one-dimensional Bose gases. We show that the super Tonks-Giradeau ga
Externí odkaz:
http://arxiv.org/abs/cond-mat/0508009
Publikováno v:
Phys. Rev. A 72, 061603 (2005)
The exact solution of the 1D interacting mixed Bose-Fermi gas is used to calculate ground-state properties both for finite systems and in the thermodynamic limit. The quasimomentum distribution, ground-state energy and generalized velocities are obta
Externí odkaz:
http://arxiv.org/abs/cond-mat/0506478
Publikováno v:
J. Phys. Conf. Ser. 42 (2006) 5
We investigate the 1D interacting two-component Fermi gas with arbitrary polarization. Exact results for the ground state energy, quasimomentum distribution functions, spin velocity and charge velocity reveal subtle polarization dependent quantum eff
Externí odkaz:
http://arxiv.org/abs/cond-mat/0506264
Publikováno v:
J. Phys. A 38 (2005) 7787-7806
We consider the integrable one-dimensional delta-function interacting Bose gas in a hard wall box which is exactly solved via the coordinate Bethe Ansatz. The ground state energy, including the surface energy, is derived from the Lieb-Liniger type in
Externí odkaz:
http://arxiv.org/abs/cond-mat/0505550
Publikováno v:
J.Stat.Mech.0410:P10017,2004
The ground state and thermodynamic properties of spin-1 and spin-3/2 chains are investigated via exactly solved su(3) and su(4) models with physically motivated chemical potential terms. The analysis involves the Thermodynamic Bethe Ansatz and the Hi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0409311