Strong-coupling expansion for the momentum distribution of the Bose-Hubbard model with benchmarking against exact numerical results
نویسندگان
چکیده
J. K. Freericks, H. R. Krishnamurthy, Yasuyuki Kato, Naoki Kawashima, and Nandini Trivedi Department of Physics, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, USA Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India Condensed Matter Theory Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560064, India Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA Received 19 February 2009; published 20 May 2009
منابع مشابه
Momentum distribution of the insulating phases of the extended Bose-Hubbard model
We develop two methods to calculate the momentum distribution of the insulating Mott and charge-densitywave phases of the extended Bose-Hubbard model with on-site and nearest-neighbor boson-boson repulsions on d-dimensional hypercubic lattices. First, we construct the random-phase approximation result, which corresponds to the exact solution for the infinite-dimensional limit. Then, we perform ...
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