Biswas, Tirthabir and Talaganis, Spyridon (2015) String-inspired infinite-derivative theories of gravity:a brief overview. Modern Physics Letters A, 30 (03n04). ISSN 0217-7323
Full text not available from this repository.Abstract
In String Theory, there often appears a rather interesting class of higher derivative theories containing an infinite set of derivatives in the form of an exponential. These theories may provide a way to tame ultraviolet (UV) divergences without introducing ghost-like states. Here we provide a brief overview on the progress that has been made over the last decade to construct such infinite-derivative theories of gravity (IDG) which may be able to address the singularity problems in gravity. In the process, we will present some general results that applies to covariant torsion-free metric theories of gravity.