The low-density limit of quantum systems
نویسندگان
چکیده
منابع مشابه
Quantum stochastic equation for the low density limit
Abstract A new derivation of quantum stochastic differential equation for the evolution operator in the low density limit is presented. We use the distribution approach and derive a new algebra for quadratic master fields in the low density limit by using the energy representation. We formulate the stochastic golden rule in the low density limit case for a system coupling with Bose field via qu...
متن کاملthe effect of traffic density on the accident externality from driving the case study of tehran
در این پژوهش به بررسی اثر افزایش ترافیک بر روی تعداد تصادفات پرداخته شده است. به این منظور 30 تقاطع در شهر تهران بطور تصادفی انتخاب گردید و تعداد تصادفات ماهیانه در این تقاطعات در طول سالهای 89-90 از سازمان کنترل ترافیک شهر تهران استخراج گردید و با استفاده از مدل داده های تابلویی و نرم افزار eviews مدل خطی و درجه دوم تخمین زده شد و در نهایت این نتیجه حاصل شد که تقاطعات پر ترافیک تر تعداد تصادفا...
15 صفحه اولThe stochastic limit of quantum spin systems
The stochastic limit for the system of spins interacting with a boson field is investigated. In the finite volume an application of the stochastic golden rule shows that in the limit the dynamics of a quantum system is described by a quantum white noise equation that after taking of normal order is equivalent to quantum stochastic differential equation (QSDE). For the quantum Langevin equation ...
متن کاملLow Density Limit and the Quantum Langevin Equation for the Heat Bath
We consider a repeated quantum interaction model describing a small system HS in interaction with each one of the identical copies of the chain ⊗ N C n+1, modeling a heat bath, one after another during the same short time intervals [0, h]. We suppose that the repeated quantum interaction Hamiltonian is split in two parts: a free part and an interaction part with time scale of order h. After giv...
متن کاملCompeting quantum Hall phases in the second Landau level in the low-density limit
W. Pan,1 A. Serafin,2 J. S. Xia,2 L. Yin,2 N. S. Sullivan,2 K. W. Baldwin,3 K. W. West,3 L. N. Pfeiffer,3 and D. C. Tsui3 1Sandia National Laboratories, Albuquerque, New Mexico 87185, USA 2University of Florida and National High Magnetic Field Laboratory, Gainesville, Florida 32611, USA 3Princeton University, Princeton, New Jersey 08544, USA (Received 20 June 2013; revised manuscript received 1...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics A: Mathematical and General
سال: 1991
ISSN: 0305-4470,1361-6447
DOI: 10.1088/0305-4470/24/15/019