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Large-N bounds on, and compositeness limit of, gauge and gravitational interactions
In a toy model of gauge and gravitational interactions in $D \ge 4$ dimensions, endowed with an invariant UV cut-off $\Lambda$, and containing a large number $N$ of non-self-interacting matter species, the physical gauge and gravitational couplings at the cut-off, $\alpha_g \equiv g^2 \Lambda^{D-4}$...
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Lenguaje: | eng |
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2001
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Acceso en línea: | https://dx.doi.org/10.1088/1126-6708/2002/06/051 http://cds.cern.ch/record/522940 |
_version_ | 1780897851699625984 |
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author | Veneziano, Gabriele |
author_facet | Veneziano, Gabriele |
author_sort | Veneziano, Gabriele |
collection | CERN |
description | In a toy model of gauge and gravitational interactions in $D \ge 4$ dimensions, endowed with an invariant UV cut-off $\Lambda$, and containing a large number $N$ of non-self-interacting matter species, the physical gauge and gravitational couplings at the cut-off, $\alpha_g \equiv g^2 \Lambda^{D-4}$ and $\alpha_G \equiv G_N \Lambda^{D-2}$, are shown to be bounded by appropriate powers of ${1\over N}$. This implies that the infinite-bare-coupling (so-called compositeness) limit of these theories is smooth, and can even resemble our world. We argue that such a result, when extended to more realistic situations, can help avoid large-N violations of entropy bounds, solve the dilaton stabilization and GUT-scale problems in superstring theory, and provide a new possible candidate for quintessence. |
id | cern-522940 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2001 |
record_format | invenio |
spelling | cern-5229402019-09-30T06:29:59Zdoi:10.1088/1126-6708/2002/06/051http://cds.cern.ch/record/522940engVeneziano, GabrieleLarge-N bounds on, and compositeness limit of, gauge and gravitational interactionsParticle Physics - TheoryIn a toy model of gauge and gravitational interactions in $D \ge 4$ dimensions, endowed with an invariant UV cut-off $\Lambda$, and containing a large number $N$ of non-self-interacting matter species, the physical gauge and gravitational couplings at the cut-off, $\alpha_g \equiv g^2 \Lambda^{D-4}$ and $\alpha_G \equiv G_N \Lambda^{D-2}$, are shown to be bounded by appropriate powers of ${1\over N}$. This implies that the infinite-bare-coupling (so-called compositeness) limit of these theories is smooth, and can even resemble our world. We argue that such a result, when extended to more realistic situations, can help avoid large-N violations of entropy bounds, solve the dilaton stabilization and GUT-scale problems in superstring theory, and provide a new possible candidate for quintessence.hep-th/0110129CERN-TH-2001-278oai:cds.cern.ch:5229402001-10-15 |
spellingShingle | Particle Physics - Theory Veneziano, Gabriele Large-N bounds on, and compositeness limit of, gauge and gravitational interactions |
title | Large-N bounds on, and compositeness limit of, gauge and gravitational interactions |
title_full | Large-N bounds on, and compositeness limit of, gauge and gravitational interactions |
title_fullStr | Large-N bounds on, and compositeness limit of, gauge and gravitational interactions |
title_full_unstemmed | Large-N bounds on, and compositeness limit of, gauge and gravitational interactions |
title_short | Large-N bounds on, and compositeness limit of, gauge and gravitational interactions |
title_sort | large-n bounds on, and compositeness limit of, gauge and gravitational interactions |
topic | Particle Physics - Theory |
url | https://dx.doi.org/10.1088/1126-6708/2002/06/051 http://cds.cern.ch/record/522940 |
work_keys_str_mv | AT venezianogabriele largenboundsonandcompositenesslimitofgaugeandgravitationalinteractions |