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Temperature changes when adiabatically ramping up an optical lattice

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Abstract
When atoms are loaded into an optical lattice, the process of gradually turning on the lattice is almost adiabatic. In this paper, we investigate how the temperature changes when going from the gapless superfluid phase to the gapped Mott phase along isentropic lines. To do so we calculate the entropy in the single-band Bose-Hubbard model for various densities, interaction strengths and temperatures in one and two dimensions for homogeneous and trapped systems. Our theory is able to reproduce the experimentally observed visibilities and therefore strongly supports the view that current experiments remain in the quantum regime for the considered lattice depths with low temperatures and minimal heating.
Keywords
TONKS-GIRARDEAU GAS, ALGORITHM, ATOMS, BOSE-HUBBARD MODEL, THERMODYNAMICS

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Citation

Please use this url to cite or link to this publication:

Chicago
Pollet, Lode, Corinna Kollath, Kris Van Houcke, and Matthias Troyer. 2008. “Temperature Changes When Adiabatically Ramping up an Optical Lattice.” New Journal of Physics 10: AR065001.
APA
Pollet, L., Kollath, C., Van Houcke, K., & Troyer, M. (2008). Temperature changes when adiabatically ramping up an optical lattice. NEW JOURNAL OF PHYSICS, 10, AR065001.
Vancouver
1.
Pollet L, Kollath C, Van Houcke K, Troyer M. Temperature changes when adiabatically ramping up an optical lattice. NEW JOURNAL OF PHYSICS. 2008;10:AR065001.
MLA
Pollet, Lode, Corinna Kollath, Kris Van Houcke, et al. “Temperature Changes When Adiabatically Ramping up an Optical Lattice.” NEW JOURNAL OF PHYSICS 10 (2008): AR065001. Print.
@article{745830,
  abstract     = {When atoms are loaded into an optical lattice, the process of gradually turning on the lattice is almost adiabatic. In this paper, we investigate how the temperature changes when going from the gapless superfluid phase to the gapped Mott phase along isentropic lines. To do so we calculate the entropy in the single-band Bose-Hubbard model for various densities, interaction strengths and temperatures in one and two dimensions for homogeneous and trapped systems. Our theory is able to reproduce the experimentally observed visibilities and therefore strongly supports the view that current experiments remain in the quantum regime for the considered lattice depths with low temperatures and minimal heating.},
  author       = {Pollet, Lode and Kollath, Corinna and Van Houcke, Kris and Troyer, Matthias},
  issn         = {1367-2630},
  journal      = {NEW JOURNAL OF PHYSICS},
  keyword      = {TONKS-GIRARDEAU GAS,ALGORITHM,ATOMS,BOSE-HUBBARD MODEL,THERMODYNAMICS},
  language     = {eng},
  title        = {Temperature changes when adiabatically ramping up an optical lattice},
  url          = {http://dx.doi.org/10.1088/1367-2630/10/6/065001},
  volume       = {10},
  year         = {2008},
}

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