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A Dynamical Yukawa\(_{2}\) Model

  • Ajay Chandra,
  • Martin Hairer,
  • Martin Peev

摘要

We prove local (in space and time) well-posedness for a mildly regularised version of the stochastic quantisation of the \(\hbox {Yukawa}_{{2}}\) Yukawa 2 Euclidean field theory with a self-interacting boson. Our regularised dynamic is still singular but avoids non-local divergences, allowing us to use a version of the Da Prato–Debussche argument (Da Prato and Debussche in Ann Probab 31(4):1900–1916, 2003. https://doi.org/10.1214/aop/1068646370). This model is a test case for a non-commutative probability framework for formulating the kind of singular SPDEs arising in the stochastic quantisation of field theories mixing both bosons and fermions.