0 M ar 1 99 8 Renormalization - Group Theory and Universality along the Lambda Line of 4 He

نویسنده

  • V Dohm
چکیده

The present status of the renormalization-group (RG) predictions on the superfluid density ρ s and the specific heat C + and C − near the λ-line of 4 He is briefly reviewed. Particular attention is given to universal amplitude ratios related to these quantities. The goals of a new theory project are presented that involves higher-order calculations of the amplitude functions of ρ s , C + and C − which are of fundamental importance for a test of the universality predictions of the RG theory.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Renormalization-group Theory and Universality along the Lambda Line Of

The present status of the renormalization-group (RG) predictions on the superfluid density ρ s and the specific heat C + and C − near the λ-line of 4 He is briefly reviewed. Particular attention is given to universal amplitude ratios related to these quantities. The goals of a new theory project are presented that involves higher-order calculations of the amplitude functions of ρ s , C + and C ...

متن کامل

ar X iv : 0 81 0 . 56 34 v 1 [ he p - la t ] 3 1 O ct 2 00 8 Lattice QCD : a critical status report DESY 08 - 138

The substantial progress that has been achieved in lattice QCD in the last years is pointed out. I compare the simulation cost and systematic effects of several lattice QCD formulations and discuss a number of topics such as lattice spacing scaling, applications of chiral perturbation theory, non-perturbative renormalization and finite volume effects. Additionally, the importance of demonstrati...

متن کامل

ar X iv : h ep - t h / 97 07 06 0 v 1 5 J ul 1 99 7 Zamalodchikov ’ s C - Theorem and The Logarithmic Conformal Field Theory

We consider perturbation of a conformal field theory by a pair of relevant logarithmic operators and calculate Zamalodchikov's C function up to two loops. We observe that the renormalization group trajectories are not always along decreasing values of C. However there exists a domain of structure constants in which the c-theorem still holds.

متن کامل

ar X iv : h ep - p h / 96 11 29 8 v 1 1 1 N ov 1 99 6 PLANCKSUSY - new program for SUSY masses calculations : from Planck scale to our reality

We describe briefly new program for SUSY masses calculations. The main distinction of our program is that we start to solve the renormalization group equations for soft SUSY breaking parameters for SU(5) SUSY GUT model from Planck scale M P L = 2.4 · 10 18 Gev. Our program works also for large tan(β). We find that for m 0 ≤ 0.5 · m 1 2 the effects of the evolution from Planck scale to GUT scale...

متن کامل

ar X iv : h ep - t h / 98 03 17 3 v 1 2 0 M ar 1 99 8 CONSISTENCY OF BLOCKING TRANSFORMATIONS IN THE FINITE - TEMPERATURE RENORMALIZATION GROUP

The finite-temperature renormalization group is formulated via the Wilson-Kadanoff blocking transformation. Momentum modes and the Matsubara frequencies are coupled by constraints from a smearing function which plays the role of an infrared cutoff regulator. Using the scalar λφ theory as an example, we consider four general types of smearing functions and show that, to zeroth-order in the deriv...

متن کامل

ذخیره در منابع من

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1998