کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
978281 | 933270 | 2007 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ground-state instabilities and entanglement in the spin-boson model
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موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Ground-state instabilities and entanglement in the spin-boson model Ground-state instabilities and entanglement in the spin-boson model](/preview/png/978281.png)
چکیده انگلیسی
Ground-state instabilities of the spin-boson model is studied in this work. The existence of sequential ground-state instabilities is shown analytically for arbitrary detuning in the two-spin system. In this model, extra discontinuities of concurrence (entanglement measure) are found in the finite system, which do not appear in the on-resonant model. The above results remain intact by including extra boson modes. Moreover, by including extra modes, it is found that ground-state entanglement can be obtained and enhanced even in the weak coupling regime.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 374, Issue 2, 1 February 2007, Pages 631-645
Journal: Physica A: Statistical Mechanics and its Applications - Volume 374, Issue 2, 1 February 2007, Pages 631-645
نویسندگان
Ru-Fen Liu, Chia-Chu Chen,