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Tunneling dynamics of correlated bosons in a double well potential

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Abstract

The quantum dynamics of a few bosons in a double well potential is studied using a Bose Hubbard model. We consider both signs for the on-site interparticle interaction and also investigated the situations where they are large and small. Interesting distinctive features are noted for the tunneling oscillations of these bosons corresponding to the above scenarios. Further, the sensitivity of the particle dynamics to the initial conditions has been studied. It is found that corresponding to an odd number of particles, such as three (or five), an initial condition of having unequal number of particles in the wells has interesting consequences, which is most discernible when the population difference between the wells is unity.

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Authors and Affiliations

  1. Department of Physics, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India

    Sunayana Dutta, Apurba Barman, Anat Siddharth & Saurabh Basu

  2. Department of Physical Sciences, IISER-Kolkata, Mohanpur, 741252, Nadia, India

    Ayan Khan

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  1. Sunayana Dutta
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  2. Apurba Barman
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  3. Anat Siddharth
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  4. Ayan Khan
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  5. Saurabh Basu
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Correspondence to Ayan Khan.

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Dutta, S., Barman, A., Siddharth, A. et al. Tunneling dynamics of correlated bosons in a double well potential. Eur. Phys. J. B 88, 139 (2015). https://doi.org/10.1140/epjb/e2015-60244-9

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