Critical exponents and critical amplitude ratio of the scalar model from finite-temperature field theory
نویسندگان
چکیده
منابع مشابه
Finite-Temperature Renormalization Group Predictions: The Critical Temperature, Exponents and Amplitude Ratios
λφ theory at finite temperature suffers from infrared divergences near the temperature at which the symmetry is restored. These divergences are handled using renormalization group methods. Flow equations which use a fiducial mass as flow parameter are well adapted to predicting the non-trivial critical exponents whose presence is reflected in these divergences. Using a fiducial temperature as f...
متن کاملEffective Critical Exponents from Finite Temperature Renormalization Group
Effective critical exponents for the λφ4 scalar field theory are calculated as a function of the renormalization group block size k−1 o and inverse critical temperature βc. Exact renormalization group equations are presented up to first order in the derivative expansion and numerical solutions are obtained with and without polynomial expansion of the blocked potential. For a finite temperature ...
متن کاملThree-loop critical exponents, amplitude functions, and amplitude ratios from variational perturbation theory.
We use variational perturbation theory to calculate various universal amplitude ratios above and below Tc in minimally subtracted straight phi4 theory with N components in three dimensions. In order to best exhibit the method as a powerful alternative to Borel resummation techniques, we consider only two- and three-loops expressions where our results are analytic expressions. For the critical e...
متن کاملCritical exponents from a regularized field theoretical model
We use a regularized (~2)2 field theory for the determination of the critical exponents 03B3 and 03BD in three dimensions. The regularization is done by a Gaussian propagator. This enables any order in g for any correlation function to be easily calculated but introduces a second expansion parameter. In spite of the difficulties encountered when dealing with double series, we obtain values for ...
متن کاملthe effect of using critical discourse analytical tools on the improvement of the learners level of critical thinking in reading comprehension
?it is of utmost priority for an experienced teacher to train the mind of the students, and enable them to think critically and correctly. the most important question here is that how to develop such a crucial ability? this study examines a new way to the development of critical thinking utilizing critical discourse analytical tools. to attain this goal, two classes of senior english la...
ذخیره 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 D
سال: 1998
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.57.7460