Published September 2005 | Version v1
Journal article Metadata-only

Dynamic response of trapped ultracold bosons on optical lattices

Creators

  • 1. Institut Non-Lineaire de Nice, Universite de Nice-Sophia Antipolis, 1361 Route des Lucioles, 06560 Valbonne (France)
  • 2. Institut fuer Theoretische Physik und Astrophysik, Universitaet Wuerzburg, Am Hubland, D-97074 Wuerzburg (Germany)
  • 3. Physics Department, University of California, Davis, California 95616 (United States)
  • 4. Lorentz Institute, Leiden University, P. O. Box 9506, 2300 RA Leiden (Netherlands)

Description

We study the dynamic response of ultracold bosons trapped in one-dimensional optical lattices using Quantum Monte Carlo simulations of the boson Hubbard model with a confining potential. The dynamic structure factor reveals the inhomogeneous nature of the low temperature state, which contains coexisting Mott insulator and superfluid regions. We present new evidence for local quantum criticality and discuss implications for the experimental excitation spectrum of 87Rb atoms confined in one dimension

Additional details

Identifiers

DOI
10.1103/PhysRevA.72.031601;
arXiv
arXiv:cond-mat/0503371v1;

Publishing Information

Journal Title
Physical Review. A
Journal Volume
72
Journal Issue
3
Journal Page Range
p. 031601-031601.4
ISSN
1050-2947
CODEN
PLRAAN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37030729
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
ATOMS; BOSE-EINSTEIN CONDENSATION; BOSONS; COMPUTERIZED SIMULATION; EXCITATION; HUBBARD MODEL; MONTE CARLO METHOD; ONE-DIMENSIONAL CALCULATIONS; POTENTIALS; RUBIDIUM 87; STRUCTURE FACTORS; SUPERFLUIDITY; TRAPPING
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CALCULATION METHODS; CRYSTAL MODELS; DIMENSIONLESS NUMBERS; ENERGY-LEVEL TRANSITIONS; INTERMEDIATE MASS NUCLEI; ISOTOPES; MATHEMATICAL MODELS; NUCLEI; ODD-EVEN NUCLEI; RADIOISOTOPES; RUBIDIUM ISOTOPES; SIMULATION; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
(c) 2005 The American Physical Society