Phys. Rev. Lett. 103, 180401 (2009) [4 pages]Feynman Propagator for a Free Scalar Field on a Causal SetReceived 18 September 2009; published 29 October 2009 The Feynman propagator for a free bosonic scalar field on the discrete spacetime of a causal set is presented. The formalism includes scalar field operators and a vacuum state which define a scalar quantum field theory on a causal set. This work can be viewed as a novel regularization of quantum field theory based on a Lorentz invariant discretization of spacetime. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.180401
DOI:
10.1103/PhysRevLett.103.180401
PACS:
04.60.Nc, 03.65.Pm, 03.70.+k
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.