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Title: Mean-field analysis of quantum phase transitions in a periodic optical superlattice

Abstract

We analyze the various phases exhibited by a system of ultracold bosons in a periodic optical superlattice using the mean-field decoupling approximation. We investigate for a wide range of commensurate and incommensurate densities. We find the gapless superfluid phase, the gapped Mott insulator phase, and gapped insulator phases with distinct density wave orders.

Authors:
 [1];  [1];  [2]; ;  [3];  [2]
  1. Indian Institute of Astrophysics, II Block, Koramangala, Bangalore 560 034 (India)
  2. (India)
  3. Department of Physics, Goa University, Taleigao Plateau, Goa 403 206 (India)
Publication Date:
OSTI Identifier:
22068776
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: (c) 2011 American Institute of Physics; Country of input: Syrian Arab Republic; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS; APPROXIMATIONS; BOSONS; DECOUPLING; DENSITY; MEAN-FIELD THEORY; PERIODICITY; PHASE TRANSFORMATIONS; SUPERFLUIDITY; SUPERLATTICES

Citation Formats

Dhar, Arya, Singh, Manpreet, School of Interdisciplinary and Transdisciplinary Studies, Indira Gandhi National Open University, New Delhi 110 068, Pai, Ramesh V., Das, B. P., and Indian Institute of Astrophysics, II Block, Kormangala, Bangalore 560 034. Mean-field analysis of quantum phase transitions in a periodic optical superlattice. United States: N. p., 2011. Web. doi:10.1103/PHYSREVA.84.033631.
Dhar, Arya, Singh, Manpreet, School of Interdisciplinary and Transdisciplinary Studies, Indira Gandhi National Open University, New Delhi 110 068, Pai, Ramesh V., Das, B. P., & Indian Institute of Astrophysics, II Block, Kormangala, Bangalore 560 034. Mean-field analysis of quantum phase transitions in a periodic optical superlattice. United States. doi:10.1103/PHYSREVA.84.033631.
Dhar, Arya, Singh, Manpreet, School of Interdisciplinary and Transdisciplinary Studies, Indira Gandhi National Open University, New Delhi 110 068, Pai, Ramesh V., Das, B. P., and Indian Institute of Astrophysics, II Block, Kormangala, Bangalore 560 034. Thu . "Mean-field analysis of quantum phase transitions in a periodic optical superlattice". United States. doi:10.1103/PHYSREVA.84.033631.
@article{osti_22068776,
title = {Mean-field analysis of quantum phase transitions in a periodic optical superlattice},
author = {Dhar, Arya and Singh, Manpreet and School of Interdisciplinary and Transdisciplinary Studies, Indira Gandhi National Open University, New Delhi 110 068 and Pai, Ramesh V. and Das, B. P. and Indian Institute of Astrophysics, II Block, Kormangala, Bangalore 560 034},
abstractNote = {We analyze the various phases exhibited by a system of ultracold bosons in a periodic optical superlattice using the mean-field decoupling approximation. We investigate for a wide range of commensurate and incommensurate densities. We find the gapless superfluid phase, the gapped Mott insulator phase, and gapped insulator phases with distinct density wave orders.},
doi = {10.1103/PHYSREVA.84.033631},
journal = {Physical Review. A},
issn = {1050-2947},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}