Dimensional regularization and dimensional reduction in the light cone
نویسندگان
چکیده
منابع مشابه
Light-Cone Gauge Superstring Field Theory and Dimensional Regularization
We propose a dimensional regularization scheme in the light-cone gauge NSR superstring field theory to regularize the divergences caused by the colliding supercurrents inserted at the interaction points. We study the tree amplitudes and show that our scheme actually regularize the divergences. We examine the four-point amplitudes for the NS-NS closed strings and find that the results in the fir...
متن کاملFactorization and Regularization by Dimensional Reduction
Since an old observation by Beenakker et al, the evaluation of QCD processes in dimensional reduction has repeatedly led to terms that seem to violate the QCD factorization theorem. We reconsider the example of the process gg → tt̄ and show that the factorization problem can be completely resolved. A natural interpretation of the seemingly non-factorizing terms is found, and they are rewritten i...
متن کاملThe difference between n - dimensional regularization and n - dimensional reduction in QCD
We discuss the difference between n-dimensional regularization and n-dimensional reduction for processes in QCD which have an additional mass scale. Examples are heavy flavour production in hadron-hadron collisions or on-shell photon-hadron collisions where the scale is represented by the mass m. Another example is electroproduction of heavy flavours where we have two mass scales given by m and...
متن کاملDimensional reduction in numerical relativity: Modified Cartoon formalism and regularization
William G. Cook∗, Pau Figueras∗,†, Markus Kunesch∗, Ulrich Sperhake∗,‡,§ and Saran Tunyasuvunakool∗,† ∗Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 0WA, UK †School of Mathematical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK ‡California Institute of Technology, Pasadena, CA 91125, USA §Department of Physics and ...
متن کاملDimensional Regularization
The problem of perturbative renormalization theory is to give a meaning to certain divergent integrals arising from Feynman diagrams. The analytical difficulty is to regularize the occurring divergent integrals, associating to each Feynman diagram some finite value. The physical difficulty is to do this in such a way that the outcome has a physical meaning. The contributions of the various Feyn...
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 D
سال: 2008
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.77.125032