Results 111 to 120 of about 1,806 (222)

Geometrically Relating Momentum Cut-Off and Dimensional Regularization [PDF]

, 2013
The β function for a scalar field theory describes the dependence of the coupling constant on the renormalization mass scale. This dependence is affected by the choice of regularization scheme.
Agarwala, Susama
core  

Renormalization of stochastically quantized field theories [PDF]

, 1988
We discuss the renormalizability of stochastically quantized φ4 theory in four dimensions using the operator formalism of the Langevin equation developed by Namiki and Yamanaka.
Srinivasan, V., Chaturvedi, S., Kapoor, A. K.   +2 more
core   +1 more source

A renormalization scheme for semi-regular continued fractions

Monatshefte für Mathematik
Abstract In this article we study a renormalization scheme with which we find all semi-regular continued fractions of a number in a natural way. We define two maps, $$\hat{T}_{slow}$$ T ^
Niels Langeveld, David Ralston
openaire   +2 more sources

Remarks on renormalization of black hole entropy [PDF]

, 2018
We elaborate the renormalization process of entropy of a nonextremal and an extremal Reissner-Nordström black hole by using the Pauli-Villars regularization method, in which the regulator fields obey either the Bose-Einstein or Fermi-Dirac distribution ...
김성구
core  

Classical Renormalization of Codimension-two Brane Couplings [PDF]

, 2007
The curvature on codimension‐two and higher branes is not regular for arbitrary matter sources. Nevertheless, the low‐energy theory for an observer on such a brane should be well‐defined and independent to any regularization procedure.
Jean-Luc Lehners, de Rham, Claudia, Arttu Rajantie, Horace Stoica, Paul Dauncey, Carlo Contaldi, Claudia de Rham   +6 more
core   +1 more source

Regularization, renormalization, and renormalization groups

, 2011
This paper confronts renormalization used in quantum field theory and that used in critical phenomena studies in statistical mechanics or dynamical systems theory. Regularization that cures spurious divergences is distinguished from renormalization transformations allowing to compute actual physical divergences.
openaire   +1 more source

Gradient RG flow in scalar-fermion QFTs

Journal of High Energy Physics
The gradient property of the renormalisation group (RG) is examined to four-loop order in scalar-fermion systems in d = 4 and d = 4 − ε dimensions. The crucial role played by the beta shift, which is a modification of the standard dim-reg beta function ...
William H. Pannell, William P. Ronayne, Andreas Stergiou   +2 more
doaj   +1 more source

Renormalization-group equations of the LEFT at two loops: dimension-five effects

Journal of High Energy Physics
We present the first part of a systematic calculation of the two-loop anomalous dimensions in the low-energy effective field theory (LEFT): the effects at dimension five in the power counting.
Luca Naterop, Peter Stoffer
doaj   +1 more source

Renormalization for one-loop diagrams in gauge theory. [PDF]

, 2013
In most situations, calculations of Feynman diagrams which contain loops lead to infinities. Renormalization has been known to be a standard process to circumvent this difficulty. In this project, we studied two different regularization schemes, which are
Nguyen, Thi Phuc Tan.
core  

Dirac traces and the Tutte polynomial

Journal of High Energy Physics
Perturbative calculations involving fermion loops in quantum field theories require tracing over Dirac matrices. A simple way to regulate the divergences that generically appear in these calculations is dimensional regularisation, which has the ...
Joshua Lin
doaj   +1 more source