کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1856338 | 1529952 | 2007 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Newton-Leibniz integration for ket-bra operators (II)-application in deriving density operator and generalized partition function formula
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Newton-Leibniz integration for ket-bra operators (II)-application in deriving density operator and generalized partition function formula Newton-Leibniz integration for ket-bra operators (II)-application in deriving density operator and generalized partition function formula](/preview/png/1856338.png)
چکیده انگلیسی
Via the route of applying Newton-Leibniz integration rule to Dirac's symbolic operators, we show that the density operator eâβH, where H is multi-mode quadratic interacting boson operators, is a mapping of symplectic transformation in the coherent state representation appearing in the form of non-symmetric ket-bra operator integration. By virtue of the technique of integration within an ordered product (IWOP) of operators, we deduce its normally ordered form which directly leads to the generalized partition function formula and the Wigner function. Some new representations, such as displacement-squeezing correlated squeezed coherent states, constructed by the IWOP technique, also bring convenience in deriving partition functions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Physics - Volume 322, Issue 4, April 2007, Pages 866-885
Journal: Annals of Physics - Volume 322, Issue 4, April 2007, Pages 866-885
نویسندگان
Hong-yi Fan,