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Volumn 79, Issue 4, 2009, Pages

Trap-modulation spectroscopy of the Mott-insulator transition in optical lattices

Author keywords

[No Author keywords available]

Indexed keywords

COLD ATOMIC GAS; COMPRESSIBILITY MEASUREMENTS; EXPERIMENTAL DATUM; MODULATION SPECTROSCOPIES; MOTT INSULATORS; MOTT-INSULATOR TRANSITIONS; ONE-DIMENSIONAL; OPTICAL LATTICES; QUANTUM PHASE TRANSITIONS; RENORMALIZATION GROUPS; THREE DIMENSIONS; TIME DEPENDENT DENSITY MATRIXES; TIME-OF-FLIGHT MEASUREMENTS;

EID: 64649083753     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.79.041601     Document Type: Article
Times cited : (13)

References (28)
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    • We note here that while in our experiment J is changed through V0 (which has little effect on U in the range of parameters used here), in the numerical simulation J is kept constant and U is varied. The latter situation could be exactly reproduced experimentally by using a Feshbach resonance. The agreement between our experimental results and the simulation indicates that it is the ratio U/J rather than the two individual parameters that governs the system's behavior.
    • We note here that while in our experiment J is changed through V0 (which has little effect on U in the range of parameters used here), in the numerical simulation J is kept constant and U is varied. The latter situation could be exactly reproduced experimentally by using a Feshbach resonance. The agreement between our experimental results and the simulation indicates that it is the ratio U/J rather than the two individual parameters that governs the system's behavior.
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    • In the 1D experiments we checked that the trap modulation in the direction perpendicular to the tubes (i.e., in the direction of the 2D lattice) did not lead to an excitation of the Bose gas for any value of the lattice depth of the 1D lattice. This was done by modulating only the dipole trap beam that was approximately collinear with the 1D lattice beam and checking the response of the Bose gas as a function of V0.
    • In the 1D experiments we checked that the trap modulation in the direction perpendicular to the tubes (i.e., in the direction of the 2D lattice) did not lead to an excitation of the Bose gas for any value of the lattice depth of the 1D lattice. This was done by modulating only the dipole trap beam that was approximately collinear with the 1D lattice beam and checking the response of the Bose gas as a function of V0.
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    • Deviations from the mean-field thresholds are discussed in.
    • Deviations from the mean-field thresholds are discussed in.
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.