https://doi.org/10.1140/epjc/s10052-017-5023-2
Regular Article - Theoretical Physics
To
, or not to
: recent developments and comparisons of regularization schemes
1
Paul Scherrer Institut, 5232, Villigen, PSI, Switzerland
2
Physik-Institut, Universität Zürich, 8057, Zürich, Switzerland
3
Institut für Kern- und Teilchenphysik, TU Dresden, 01062, Dresden, Germany
4
Physik Department T31, Technische Universität München, 85748, Garching, Germany
5
Centro de Ciências Naturais e Humanas, UFABC, 09210-170, Santo André, Brazil
6
Insituto de Física Corpuscular, UVEG–CSIC, Universitat de València, 46980, Paterna, Spain
7
Departamento de Física, Universidad Nacional de Colombia, Bogotá D.C., Colombia
8
CFisUC, Department of Physics, University of Coimbra, 3004-516, Coimbra, Portugal
9
Dipartimento di Fisica ed Astronomia, Università di Padova, 35131, Padua, Italy
10
INFN, Sezione di Padova, 35131, Padua, Italy
11
Higgs Centre for Theoretical Physics, The University of Edinburgh, Edinburgh, EH9 3FD, UK
12
Dep. de Física Teórica y del Cosmos and CAFPE, Universidad de Granada, 18071, Granada, Spain
13
Departamento de Fïsica, ICEX, UFMG, 30161-970, Belo Horizonte, Brazil
14
Dipartimento di Fisica, Università di Milano, 20133, Milan, Italy
15
INFN, Sezione di Milano, 20133, Milan, Italy
16
Dipartimento di Fisica, Università di Napoli, 80126, Naples, Italy
17
INFN, Sezione di Napoli, 80126, Naples, Italy
* e-mail: Christoph.Gnendiger@psi.ch
Received:
5
May
2017
Accepted:
24
June
2017
Published online:
14
July
2017
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.
© The Author(s), 2017