PoS - Proceedings of Science
Volume 363 - 37th International Symposium on Lattice Field Theory (LATTICE2019) - Main session
Schwinger-Keldysh formalism for Lattice Gauge Theories
H. Hoshina,* H. Fujii, Y. Kikukawa
*corresponding author
Full text: pdf
Pre-published on: January 16, 2020
Published on:
We formulate the Schwinger-Keldysh formalism of lattice gauge theories by constructing the appropriate unitary transfer matrices in the forward and backward real-time directions for gauge- link and Wilson-Dirac fields. We can then define spectral functions at a finite lattice spacing and also formulate the linear response theory. For a real scalar field in the weak-coupling limit, the two-point Green’s function on closed time lattice path was derived analytically and the spectral function was examined numerically. The result is consistent with the continuum theory.
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.