Propagators on the two-dimensional light-cone

TL;DR

This paper applies a light-cone quantization method to two-dimensional theories, demonstrating that a previously suggested modification term in massless propagators vanishes when using two null planes.

Contribution

It shows that the modification term in two-dimensional massless light-cone propagators disappears when employing two null planes, clarifying earlier theoretical proposals.

Findings

Modification term in propagators vanishes

Use of two null planes simplifies the theory

Clarifies previous theoretical proposals

Abstract

Light-cone quantization procedure recently presented is applied to the two-dimensional light-cone theories. By introducing the two distinct null planes it is shown that the modification term in the two-dimensional massless light-cone propagators suggested about twenty years ago vanishs.