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Glueballs on the baryonic branch of Klebanov-Strassler: dimensional deconstruction and a light scalar particle

Daniel Elander, Maurizio Piai Orcid Logo

Journal of High Energy Physics, Volume: 2017, Issue: 6, Pages: 1 - 44

Swansea University Author: Maurizio Piai Orcid Logo

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Abstract

Within gauge/gravity duality, we compute the scalar and tensor mass spectrumin the boundary theory defined by the five-dimensional sigma-model coupled to gravityobtained by constraining to eight scalars the truncation on T(1,1) that corresponds to thePapadopoulos-Tseytlin (PT) ansatz. We study fluct...

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Published in: Journal of High Energy Physics
ISSN: 1029-8479
Published: 2017
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa33918
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Abstract: Within gauge/gravity duality, we compute the scalar and tensor mass spectrumin the boundary theory defined by the five-dimensional sigma-model coupled to gravityobtained by constraining to eight scalars the truncation on T(1,1) that corresponds to thePapadopoulos-Tseytlin (PT) ansatz. We study fluctuations around the 1-parameter familyof backgrounds that lift to the baryonic branch of the Klebanov-Strassler (KS) system,and interpolates between the KS background and the Maldacena-Nunez one (CVMN). Weadopt a gauge invariant formalism in the treatment of the fluctuations that we interpret asstates of the dual theory. The tensor spectrum interpolates between the discrete spectrumof the KS background and the continuum spectrum of the CVMN background, in particularshowing the emergence of a finite energy range containing a dense set of states, as expectedfrom dimensional deconstruction. The scalar spectrum shows analogous features, and inaddition it contains one state that becomes parametrically light far from the origin alongthe baryonic branch.
College: College of Science
Issue: 6
Start Page: 1
End Page: 44