Unexpected results in asymptotically free quantum field theories
نویسندگان
چکیده
منابع مشابه
Asymptotically Free Gauge Theories -
Asymptotically free gauge theories of the strong interactions are constructed and analyzed. The reasons for doing this are recounted, including a review of renormalization group techniques and their application to scaling phenomena. The renormalization group equations are derived for Yang-Mills theories. The parameters that enter into the equations are calculated to lowest order and it is shown...
متن کاملFermions in Asymptotically Free Theories
It is shown that when the dimension of gauge group exceeds a critical value NC, the only types of asymptotic-freedom-allowed representations for ._ fermions are vector and second rank tensors. A possible connection between this observation and quark-lepton spectrum is discussed.
متن کاملAsymptotically free gauge theories. II
Deep-inelastic lepton-hadron scattering is analyzed in asymptotically free gauge theories of the strong interactions. The renormalization-group equations for the coefficients of the twist-two operators in the Wilson expansion are reviewed. A careful treatment of the mixing of operators with identical quantum numbers and dimensions is given. The relevant anomalous dimensions of the twist-two ope...
متن کاملDouble expansion in asymptotically free theories.
I propose an approximation scheme for asymptotically free field theories combining both weak coupling and strong coupling series. The weak coupling expansion is used to integrate the high frequency modes and the resulting low energy effective theory is solved using the strong coupling expansion. In some models there exists an intermediate scale at which both expansions make sense. The method is...
متن کاملExact results on quantum field theories interpolating between pairs of conformal field theories
I review some recent results on conformal field theories in four dimensions and quantum field theories interpolating between conformal fixed points, supersymmetric and non-supersymmetric. The paper is structured in three parts: i) central charges, ii) anomalous dimensions and iii) quantum irreversibility. The family of theories, in general UV free, that interpolate between two conformal fixed p...
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: Nuclear Physics B
سال: 2001
ISSN: 0550-3213
DOI: 10.1016/s0550-3213(00)00696-9