@misc{10481/95699,
year = {2023},
month = {2},
url = {https://hdl.handle.net/10481/95699},
abstract = {Unimodular Gravity is a theory displaying Weyl rescalings of the metric and
transverse (volume-preserving) diffeomorphisms as gauge symmetries, as opposed to the full
set of diffeomorphisms displayed by General Relativity. Recently, we presented a systematic
comparison of both theories, concluding that both of them are equivalent in everything but
the behaviour of the cosmological constant under radiative corrections. A careful study of
how Unimodular Gravity can be embedded in the string theory framework has not been
provided yet and was not analyzed there in detail. In this article, we provide such an
explicit analysis, filling the gap in the literature. We restrict ourselves to the unoriented
bosonic string theory in critical dimension for the sake of simplicity, although we argue that
no differences are expected for other string theories. Our conclusions are that both a Diff
and a WTDiff invariance principle are equally valid for describing the massless excitations
of the string spectrum.},
organization = {Spanish Government through the projects PID2020-
118159GB-C43, PID2020-118159GB-C44},
organization = {Junta de Andalucía through the
project FQM219},
organization = {Grant CEX2021-001131-S funded by MCIN/AEI/10.13039/501100011033},
organization = {Spanish Government
fellowship FPU20/01684},
publisher = {SpringerLink},
keywords = {Bosonic Strings},
keywords = {Classical Theories of Gravity},
title = {Embedding Unimodular Gravity in string theory},
doi = {10.1007/JHEP03(2023)027},
author = {Garay Erizondo, Luis Javier and García-Moreno, Gerardo},
}