Coexistence of diagonal and off-diagonal long-range order: A Monte Carlo study.
نویسندگان
چکیده
The zero temperature properties of interacting 2 dimensional lattice bosons are investigated. We present Monte Carlo data for soft-core bosons that demonstrate the existence of a phase in which crystalline long-range order and off-diagonal long-range order (superfluidity) coexist. We comment on the difference between hard and soft-core bosons and compare our data to mean-field results that predict a larger coexistence region. Furthermore, we determine the critical exponents for the various phase transitions. Typeset using REVTEX
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ورودعنوان ژورنال:
- Physical review letters
دوره 72 22 شماره
صفحات -
تاریخ انتشار 1994