We present quantum stochastic calculus in terms of diagrams taking weights in the algebra of observables of some quantum system. In particular, we note the absence of non-time-consecutive Goldstone diagrams. We review recent results in Markovian limits in these terms.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-bc73-0-13, author = {John Gough}, title = {Feynman diagrams and the quantum stochastic calculus}, journal = {Banach Center Publications}, volume = {72}, year = {2006}, pages = {187-198}, zbl = {1103.81026}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-bc73-0-13} }
John Gough. Feynman diagrams and the quantum stochastic calculus. Banach Center Publications, Tome 72 (2006) pp. 187-198. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-bc73-0-13/