%0 Journal Article
%T Coulomb branch of N=4 SYM and dilatonic scions in supergravity
%+ Laboratoire Charles Coulomb (L2C)
%A Elander, Daniel
%A Piai, Maurizio
%A Roughley, John
%< avec comité de lecture
%@ 1550-7998
%J Physical Review D
%I American Physical Society
%V 104
%N 4
%P 046003
%8 2021
%D 2021
%Z 2103.06721
%R 10.1103/PhysRevD.104.046003
%K supersymmetry: 4
%K supergravity: solution
%K expansion 1/N
%K gravitation: duality
%K Coulomb
%K dilaton
%K background: fluctuation
%K tachyon: stability
%K dimension: 5
%Z Physics [physics]/High Energy Physics - Theory [hep-th]
%Z Physics [physics]/High Energy Physics - Lattice [hep-lat]
%Z Physics [physics]/High Energy Physics - Phenomenology [hep-ph]Journal articles
%X We find a parametrically light dilaton in special confining theories in three dimensions. Their duals form what we call a scion of solutions to the supergravity associated with the large- limit of the Coulomb branch of the Super-Yang-Mills theory. The supergravity description contains one scalar with bulk mass that saturates the Breitenlohner-Freedman unitarity bound. The new solutions are defined within supergravity, they break supersymmetry and scale invariance, and one dimension is compactified on a shrinking circle, yet they are completely regular. An approximate dilaton appears in the spectrum of background fluctuations (or composite states in the confining theory), and becomes parametrically light along a metastable portion of the scion of new supergravity solutions, in close proximity of a tachyonic instability. A first-order phase transition separates stable backgrounds, for which the approximate dilaton is not parametrically light, from metastable and unstable backgrounds, for which the dilaton becomes parametrically light, and eventually tachyonic.
%G English
%2 https://hal.science/hal-03186214/document
%2 https://hal.science/hal-03186214/file/PhysRevD.104.046003.pdf
%L hal-03186214
%U https://hal.science/hal-03186214
%~ CNRS
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021