Physics Journal
Articles Information
Physics Journal, Vol.1, No.3, Nov. 2015, Pub. Date: Dec. 30, 2015
On Integrating Out Short-Distance Physics
Pages: 331-342 Views: 7235 Downloads: 650
Authors
[01] Vladimir Kalitvianski, Grenoble, France.
Abstract
I consider a special atomic scattering problem where the target atom has distinct “soft” and “hard” excitation modes. I demonstrate that in this problem the integration out of “short-distance” (or “high-energy”) physics may occur automatically in the regular perturbative calculations, i.e., it may occur without any cut off and renormalization. Not only that, the soft inelastic processes happen already in the first Born approximation and the inclusive cross-sections become unavoidable from the very beginning. All that is possible because of correct physical and mathematical formulation of the problem. I propose to build QFT in a similar way.
Keywords
Cutoff, Renormalization, Reformulation, Effective Theory, Incomplete Theory, High-Energy Physics, Short-Distance Physics
References
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