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Abstract
We give an introduction to several regularization schemes that deal with ultraviolet and infrared singularities appearing in higher-order computations in quantum field theories. Comparing the computation of simple quantities in the various schemes, we point out similarities and differences between them.
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1 Paul Scherrer Institut, Villigen, PSI, Switzerland
2 Paul Scherrer Institut, Villigen, PSI, Switzerland; Physik-Institut, Universität Zürich, Zürich, Switzerland
3 Institut für Kern- und Teilchenphysik, Dresden, Germany
4 Physik Department T31, Technische Universität München, Garching, Germany
5 Centro de Ciências Naturais e Humanas, UFABC, Santo André, Brazil
6 Insituto de Física Corpuscular, UVEG–CSIC, Universitat de València, Paterna, Spain
7 Departamento de Física, Universidad Nacional de Colombia, Bogotá D.C., Colombia
8 CFisUC, Department of Physics, University of Coimbra, Coimbra, Portugal
9 Dipartimento di Fisica ed Astronomia, Università di Padova, Padua, Italy; INFN, Sezione di Padova, Padua, Italy
10 Higgs Centre for Theoretical Physics, The University of Edinburgh, Edinburgh, UK
11 Dep. de Física Teórica y del Cosmos and CAFPE, Universidad de Granada, Granada, Spain
12 Departamento de Fïsica, ICEX, UFMG, Belo Horizonte, Brazil
13 Insituto de Física Corpuscular, UVEG–CSIC, Universitat de València, Paterna, Spain; Dipartimento di Fisica, Università di Milano, Milan, Italy; INFN, Sezione di Milano, Milan, Italy
14 Insituto de Física Corpuscular, UVEG–CSIC, Universitat de València, Paterna, Spain; Dipartimento di Fisica ed Astronomia, Università di Padova, Padua, Italy; INFN, Sezione di Padova, Padua, Italy
15 Dipartimento di Fisica, Università di Napoli, Naples, Italy; INFN, Sezione di Napoli, Naples, Italy





