Abstract
In this paper, we construct a causal and conformally covariant massless free quantum field on the (1 + 1)-dimensional Minkowski spacetime. This field is of the Gupta–Bleuler type and does not suffer from infrared divergences. Although negative frequency states are used in its construction, the field has no unusual physical features: the energy–momentum tensor behaves reasonably when applied to physical states and it is also shown that particle detectors moving in the vacuum behave as expected.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
