Critical structure factors of bilinear fields inO(N)vector models
نویسندگان
چکیده
منابع مشابه
Critical structure factors of bilinear fields in O(N) vector models.
We compute the two-point correlation functions of general quadratic operators in the high-temperature phase of the three-dimensional O(N) vector model by using field-theoretical methods. In particular, we study the small- and large-momentum behavior of the corresponding scaling functions, and give general interpolation formulas based on a dispersive approach. Moreover, we determine the crossove...
متن کاملec adoption and critical success factors of ec in smes in iran
تجارت الکترونیکی شیوه اجرای مسئولیتها، تقابل با مشتریان و امور معمول عملیاتی در شرکتها را تغییر داده است. تجارت الکترونیکی در عمل تنها خرید و فروش کالاها را از طریق ابزار الکترونیک نمی باشد، بلکه تمام فعالیتهای لازم جهت انجام فرایند فروش را نیز در بر میگیرد. در اواخر دهه 1990 بسیاری از شرکتها فعالیتهای خود را به منظور دستیابی به مشتریان جدید و یا ارائه فرصتهای جدید به مشتریان موجود گسترش دادند...
Critical Success Factors in implementing information security governance (Case study: Iranian Central Oil Fields Company)
The oil industry, as one of the main industries of the country, has always faced cyber attacks and security threats. Therefore, the integration of information security in corporate governance is essential and a governance challenge. The integration of information security and corporate governance is called information security governance. In this research, we identified "critical success factor...
متن کاملBilinear models of natural images
Previous work on unsupervised learning has shown that it is possible to learn Gabor-like feature representations, similar to those employed in the primary visual cortex, from the statistics of natural images. However, such representations are still not readily suited for object recognition or other high-level visual tasks because they can change drastically as the image changes to due object mo...
متن کاملThe Critical Behaviour of Potts Models with Symmetry Breaking Fields
The Q-state Potts model in two dimensions in the presence of external magnetic fields is studied. For general Q ≥ 3 special choices of these magnetic fields produce effective models with smaller Z(Q) symmetry (Q < Q). The phase diagram of these models and their critical behaviour are explored by conventional finite-size scaling and conformal invariance. The possibility of multicritical behavior...
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: Physical Review E
سال: 2002
ISSN: 1063-651X,1095-3787
DOI: 10.1103/physreve.65.046115