Mollifying Quantum Field Theory or Lattice QFT in Minkowski Spacetime and Symmetry Breaking

Details Mollifying Quantum Field Theory or Lattice QFT in Minkowski Spacetime and Symmetry Breaking Mollifying Quantum Field Theory or Lattice QFT in Minkowski Spacetime and Symmetry Breaking

2006-02-08

arxiv.org/abs/hep-lat/0602013v2

Physics

High Energy Physics

High Energy Physics - Lattice

23 pages, 35 figures; check http://chep.het.brown.edu/ for high resolution figures; referees suggestions and appendix added, r

Scientific paper

This work develops and applies the concept of mollification in order to smooth out highly oscillatory exponentials. This idea, known for quite a while in the mathematical community (mollifiers are a means to smooth distributions), is new to numerical Quantum Field Theory. It is potentially very useful for calculating phase transitions [highly oscillatory integrands in general], for computations with imaginary chemical potentials and Lattice QFT in Minkowski spacetime.

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