Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Klaiman, Shachar"'
Autor:
Besta, Maciej, Scheidl, Florian, Gianinazzi, Lukas, Klaiman, Shachar, Müller, Jürgen, Hoefler, Torsten
Higher-order graph neural networks (HOGNNs) are an important class of GNN models that harness polyadic relations between vertices beyond plain edges. They have been used to eliminate issues such as over-smoothing or over-squashing, to significantly e
Externí odkaz:
http://arxiv.org/abs/2406.12841
Autor:
Klaiman, Shachar, Lehne, Marius
Information extraction from documents is a ubiquitous first step in many business applications. During this step, the entries of various fields must first be read from the images of scanned documents before being further processed and inserted into t
Externí odkaz:
http://arxiv.org/abs/2105.04313
Publikováno v:
Chem. Phys. 509, 45 (2018)
The anisotropy of a trap potential can impact the density and variance of a Bose-Einstein condensate (BEC) in an opposite manner. We exemplify this effect for both the ground state and out-of-equilibrium dynamics of structureless bosons interacting b
Externí odkaz:
http://arxiv.org/abs/1709.04223
Publikováno v:
Phys. Rev. A 95, 063602 (2017)
In this work, we study many-body excitations of Bose-Einstein condensates (BECs) trapped in periodic one-dimensional optical lattices. In particular, we investigate the impact of quantum depletion onto the structure of the low-energy spectrum and con
Externí odkaz:
http://arxiv.org/abs/1612.06711
Publikováno v:
J. Phys.: Conf. Ser. 826, 012020 (2017)
The variance and uncertainty product of the position and momentum many-particle operators of structureless bosons interacting by a long-range inter-particle interaction and trapped in a single-well potential are investigated. In the first example, of
Externí odkaz:
http://arxiv.org/abs/1611.07553
Autor:
Klaiman, Shachar, Cederbaum, Lorenz S.
It has been proven theoretically for bosons with two-body repulsive interaction potentials in the dilute limit that the Gross-Pitaevskii equation provides the exact energy and density per particle as does the basic many-particle Schroedinger equation
Externí odkaz:
http://arxiv.org/abs/1609.05895
Publikováno v:
Chem. Phys. 482, 362 (2017)
A mixture of two kinds of identical bosons held in a harmonic potential and interacting by harmonic particle-particle interactions is discussed. This is an exactly-solvable model of a mixture of two trapped Bose-Einstein condensates which allows us t
Externí odkaz:
http://arxiv.org/abs/1605.05608
Publikováno v:
Phys. Rev. A 93, 023605 (2016)
In the present work we show, analytically and numerically, that the variance of many-particle operators and their uncertainty product for an out-of-equilibrium Bose-Einstein condensate (BEC) can deviate from the outcome of the time-dependent Gross-Pi
Externí odkaz:
http://arxiv.org/abs/1509.00762
Publikováno v:
Phys. Rev. A 92, 043627 (2015)
In this work, we study the out-of-equilibrium many-body tunneling dynamics of a Bose-Einstein condensate in a two-dimensional radial double well. We investigate the impact of interparticle repulsion and compare the influence of angular momentum on th
Externí odkaz:
http://arxiv.org/abs/1508.03238
Autor:
Klaiman, Shachar, Alon, Ofir E.
Publikováno v:
Phys. Rev. A 91, 063613 (2015)
Bose-Einstein condensates made of ultracold trapped bosonic atoms have become a central venue in which interacting many-body quantum systems are studied. The ground state of a trapped Bose-Einstein condensate has been proven to be 100% condensed in t
Externí odkaz:
http://arxiv.org/abs/1502.07528