English

A Review of Third Way Consistent Theories

High Energy Physics - Theory 2022-02-22 v2

Abstract

We will give an overview of the "third way consistent" theories. Field equations of such models do not come from the variation of a local action without auxiliary fields, yet their covariant divergences still vanish on-shell. First examples were discovered in three dimensions which were pure massive gravity and Yang-Mills theories. However, recently interacting pp-form theories with this property in arbitrary dimensions were also constructed. After explaining construction of these theories and some of their general features, we will discuss some open problems and future directions

Keywords

Cite

@article{arxiv.2109.04339,
  title  = {A Review of Third Way Consistent Theories},
  author = {Nihat Sadik Deger},
  journal= {arXiv preprint arXiv:2109.04339},
  year   = {2022}
}

Comments

This paper is written for the Festscrift prepared for Prof. Tekin Dereli; v2:minor corrections

R2 v1 2026-06-24T05:49:47.971Z