Výsledky vyhledávání - "Tieleman, O."

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Chaoticity without thermalisation in disordered lattices

Autor: Tieleman, O., Skokos, Ch., Lazarides, A.

Publikováno v: EPL 105 (2014), 20001

We study chaoticity and thermalization in Bose-Einstein condensates in disordered lattices, described by the discrete nonlinear Schr\"odinger equation (DNLS). A symplectic integration method allows us to accurately obtain both the full phase space tr

Externí odkaz: http://arxiv.org/abs/1306.2810

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Finite-momentum Bose-Einstein condensates in shaken 2D square optical lattices

Autor: Di Liberto, M., Tieleman, O., Branchina, V., Smith, C. Morais

Publikováno v: Phys. Rev. A 84, 013607 (2011)

We consider ultracold bosons in a 2D square optical lattice described by the Bose-Hubbard model. In addition, an external time-dependent sinusoidal force is applied to the system, which shakes the lattice along one of the diagonals. The effect of the

Externí odkaz: http://arxiv.org/abs/1104.4350

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Supersolid phases of dipolar bosons in optical lattices with a staggered flux

Autor: Tieleman, O., Lazarides, A., Smith, C. Morais

Publikováno v: Phys. Rev. A 83, 013627 (2011)

We present the theoretical mean-field zero-temperature phase diagram of a Bose-Einstein condensate (BEC) with dipolar interactions loaded into an optical lattice with a staggered flux. Apart from uniform superfluid, checkerboard supersolid and stripe

Externí odkaz: http://arxiv.org/abs/1009.1072

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Bilayer quantum Hall system at $\nu_t = 1$: pseudospin models and in-plane magnetic field

Autor: Tieleman, O., Lazarides, A., Makogon, D., Smith, C. Morais

Publikováno v: Phys. Rev. B 80, 205315 (2009)

We investigate two theoretical pseudomagnon-based models for a bilayer quantum Hall system (BQHS) at total filling factor $\nu_t = 1$. We find a unifying framework which elucidates the different approximations that are made. We also consider the effe

Externí odkaz: http://arxiv.org/abs/0909.1729

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Pokrovsky-Talapov Model at finite temperature: a renormalization-group analysis

Autor: Lazarides, A., Tieleman, O., Smith, C. Morais

Publikováno v: Phys. Rev. B 80, 245418 (2009)

We calculate the finite-temperature shift of the critical wavevector $Q_{c}$ of the Pokrovsky-Talapov model using a renormalization-group analysis. Separating the Hamiltonian into a part that is renormalized and one that is not, we obtain the flow eq

Externí odkaz: http://arxiv.org/abs/0909.0526

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Strongly interacting bosons in a one-dimensional optical lattice at incommensurate densities

Autor: Lazarides, A., Tieleman, O., de Morais Smith, C., Theoretical Physics, Dep Natuurkunde, Sub Cond-Matter Theory, Stat & Comp Phys

Publikováno v: Physical review. A, Atomic, molecular and optical physics, 84(2). American Physical Society

We investigate quantum phase transitions occurring in a system of strongly interacting ultracold bosons in a one-dimensional optical lattice. After discussing the commensurate-incommensurate transition, we focus on the phases appearing at an incommen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b5bda557160cdc82559e4b85c4a610e
https://dspace.library.uu.nl/handle/1874/234715

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Finite-momentum Bose-Einstein condensates in shaken two-dimensional square optical lattices

Autor: Di Liberto, M.F., Tieleman, O., Branchina, V., de Morais Smith, C., Theoretical Physics, Sub Cond-Matter Theory, Stat & Comp Phys

Publikováno v: Physical review. A, Atomic, molecular and optical physics, 84(1). American Physical Society

We consider ultracold bosons in a two-dimensional square optical lattice described by the Bose-Hubbard model. In addition, an external time-dependent sinusoidal force is applied to the system, which shakes the lattice along one of the diagonals. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbcbc542f1e612ad7e07302d20c7a683
https://hdl.handle.net/11577/3457632

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Bilayer quantum Hall system at vt=1: pseudospin models and in-plane magnetic field

Autor: Tieleman, O., Lazarides, A., Makogon, D., de Morais Smith, C., Instituut Theoretische Fysica, Theoretical Physics, Sub Cond-Matter Theory, Stat & Comp Phys, Dep Natuurkunde

Publikováno v: Physical review. B, Condensed matter and materials physics, 80(20), 205315/1. American Physical Society

We investigate two theoretical pseudomagnon-based models for a bilayer quantum Hall system BQHS at total filling factor t=1. We find a unifying framework which elucidates the different approximations that are made. We also consider the effect of an i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::a15a7b6365915b7453bda66653c297a7
https://dspace.library.uu.nl/handle/1874/42606

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