Delocalized SYZ mirrors and confronting top–down SU(3)-structure holographic meson masses at finite g and $$N_c$$ Nc with P(article) D(ata) G(roup) values
Abstract Meson spectroscopy at finite gauge coupling – whereat any perturbative QCD computation would break down – and finite number of colors, from a top–down holographic string model, has thus far been entirely missing in the literature. This paper fills this gap. Using the delocalized type IIA SY...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-09-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-017-5219-5 |
| _version_ | 1818308569357877248 |
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| author | Vikas Yadav Aalok Misra Karunava Sil |
| author_facet | Vikas Yadav Aalok Misra Karunava Sil |
| author_sort | Vikas Yadav |
| collection | DOAJ |
| description | Abstract Meson spectroscopy at finite gauge coupling – whereat any perturbative QCD computation would break down – and finite number of colors, from a top–down holographic string model, has thus far been entirely missing in the literature. This paper fills this gap. Using the delocalized type IIA SYZ mirror (with SU(3) structure) of the holographic type IIB dual of large-N thermal QCD of Mia et al. (Nucl Phys B 839:187. arXiv:0902.1540 [hep-th], 2010) as constructed in Dhuria and Misra (JHEP 1311:001. arXiv:1306.4339 [hep-th], 2013) at finite coupling and number of colors ($$N_c =$$ Nc= number of $$D5(\overline{D5}$$ D5(D5¯ )-branes wrapping a vanishing two-cycle in the top–down holographic construct of Mia et al. (Nucl Phys B 839:187. arXiv:0902.1540 [hep-th], 2010) = $$\mathcal{O}(1)$$ O(1) in the IR in the MQGP limit of Dhuria and Misra (JHEP 1311:001. arXiv:1306.4339 [hep-th], 2013) at the end of a Seiberg-duality cascade), we obtain analytical (not just numerical) expressions for the vector and scalar meson spectra and compare our results with previous calculations of Sakai and Sugimoto (Prog Theor Phys 113:843. doi:10.1143/PTP.113.843. arXiv:hep-th/0412141, 2005) and Dasgupta et al. (JHEP 1507:122. doi:10.1007/JHEP07(2015)122. arXiv:1409.0559 [hep-th], 2015), and we obtain a closer match with the Particle Data Group (PDG) results of Olive et al. (Particle Data Group) (Chin Phys C 38:090001, 2014). Through explicit computations, we verify that the vector and scalar meson spectra obtained by the gravity dual with a black hole for all temperatures (small and large) are nearly isospectral with the spectra obtained by a thermal gravity dual valid for only low temperatures; the isospectrality is much closer for vector mesons than scalar mesons. The black-hole gravity dual (with a horizon radius smaller than the deconfinement scale) also provides the expected large-N suppressed decrease in vector meson mass with increase of temperature. |
| first_indexed | 2024-12-13T07:16:21Z |
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| issn | 1434-6044 1434-6052 |
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| spelling | doaj.art-21f84efba0174f39b1ffd4c5b72eae7d2022-12-21T23:55:33ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522017-09-01771013510.1140/epjc/s10052-017-5219-5Delocalized SYZ mirrors and confronting top–down SU(3)-structure holographic meson masses at finite g and $$N_c$$ Nc with P(article) D(ata) G(roup) valuesVikas Yadav0Aalok Misra1Karunava Sil2Department of Physics, Indian Institute of TechnologyDepartment of Physics, Indian Institute of TechnologyDepartment of Physics, Indian Institute of TechnologyAbstract Meson spectroscopy at finite gauge coupling – whereat any perturbative QCD computation would break down – and finite number of colors, from a top–down holographic string model, has thus far been entirely missing in the literature. This paper fills this gap. Using the delocalized type IIA SYZ mirror (with SU(3) structure) of the holographic type IIB dual of large-N thermal QCD of Mia et al. (Nucl Phys B 839:187. arXiv:0902.1540 [hep-th], 2010) as constructed in Dhuria and Misra (JHEP 1311:001. arXiv:1306.4339 [hep-th], 2013) at finite coupling and number of colors ($$N_c =$$ Nc= number of $$D5(\overline{D5}$$ D5(D5¯ )-branes wrapping a vanishing two-cycle in the top–down holographic construct of Mia et al. (Nucl Phys B 839:187. arXiv:0902.1540 [hep-th], 2010) = $$\mathcal{O}(1)$$ O(1) in the IR in the MQGP limit of Dhuria and Misra (JHEP 1311:001. arXiv:1306.4339 [hep-th], 2013) at the end of a Seiberg-duality cascade), we obtain analytical (not just numerical) expressions for the vector and scalar meson spectra and compare our results with previous calculations of Sakai and Sugimoto (Prog Theor Phys 113:843. doi:10.1143/PTP.113.843. arXiv:hep-th/0412141, 2005) and Dasgupta et al. (JHEP 1507:122. doi:10.1007/JHEP07(2015)122. arXiv:1409.0559 [hep-th], 2015), and we obtain a closer match with the Particle Data Group (PDG) results of Olive et al. (Particle Data Group) (Chin Phys C 38:090001, 2014). Through explicit computations, we verify that the vector and scalar meson spectra obtained by the gravity dual with a black hole for all temperatures (small and large) are nearly isospectral with the spectra obtained by a thermal gravity dual valid for only low temperatures; the isospectrality is much closer for vector mesons than scalar mesons. The black-hole gravity dual (with a horizon radius smaller than the deconfinement scale) also provides the expected large-N suppressed decrease in vector meson mass with increase of temperature.http://link.springer.com/article/10.1140/epjc/s10052-017-5219-5 |
| spellingShingle | Vikas Yadav Aalok Misra Karunava Sil Delocalized SYZ mirrors and confronting top–down SU(3)-structure holographic meson masses at finite g and $$N_c$$ Nc with P(article) D(ata) G(roup) values European Physical Journal C: Particles and Fields |
| title | Delocalized SYZ mirrors and confronting top–down SU(3)-structure holographic meson masses at finite g and $$N_c$$ Nc with P(article) D(ata) G(roup) values |
| title_full | Delocalized SYZ mirrors and confronting top–down SU(3)-structure holographic meson masses at finite g and $$N_c$$ Nc with P(article) D(ata) G(roup) values |
| title_fullStr | Delocalized SYZ mirrors and confronting top–down SU(3)-structure holographic meson masses at finite g and $$N_c$$ Nc with P(article) D(ata) G(roup) values |
| title_full_unstemmed | Delocalized SYZ mirrors and confronting top–down SU(3)-structure holographic meson masses at finite g and $$N_c$$ Nc with P(article) D(ata) G(roup) values |
| title_short | Delocalized SYZ mirrors and confronting top–down SU(3)-structure holographic meson masses at finite g and $$N_c$$ Nc with P(article) D(ata) G(roup) values |
| title_sort | delocalized syz mirrors and confronting top down su 3 structure holographic meson masses at finite g and n c nc with p article d ata g roup values |
| url | http://link.springer.com/article/10.1140/epjc/s10052-017-5219-5 |
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