Journal article 1167 views 113 downloads
Glueballs on the baryonic branch of Klebanov-Strassler: dimensional deconstruction and a light scalar particle
Journal of High Energy Physics, Volume: 2017, Issue: 6, Pages: 1 - 44
Swansea University Author:
Maurizio Piai
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DOI (Published version): 10.1007/JHEP06(2017)003
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...
| Published in: | Journal of High Energy Physics |
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| ISSN: | 1029-8479 |
| Published: |
2017
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| Online Access: |
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| 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. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
6 |
| Start Page: |
1 |
| End Page: |
44 |