QCD-compatible supermassive inert top-down holographic mesinos at intermediate coupling

Aalok Misra (Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India) ; Gopal Yadav (Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India; Chennai Mathematical Institute, SIPCOT IT Park, Siruseri 603103, India)

A longstanding problem with the popular Sakai-Sugimoto holographic dual of thermal QCD is that the mesinos, the (nonsupersymmetric) fermionic partners of the mesons, are nearly isospectral with mesons and have an unsuppressed mesino-mesino-meson interaction, both being in contradiction with actual QCD. We solve this problem in a UV complete (and different) type-IIA string dual at intermediate coupling of realistic thermal QCD, in which the mesinos are shown to be much heavier than and noninteracting with mesons (the wave function/mass/interaction terms receiving no M-theory O(R4) corrections). In particular we derive a large-N enhancement of the Kaluza-Klein (KK) mass scale MKK (from MKK to MKKeffN1+1O(1)MKK) arising from the construction of the type-IIA mirror [1] of the type-IIB dual [2] of thermal QCD-like theories, as well as the generation of a one-parameter family of MKK-independent mass scale at O(R4) in the M-theory uplift [3], wherein the parameter can be made appropriately large. We also show that the mesino-mesino-single-(ρ/π)meson interactions, vanish identically in the aforementioned type-IIA holographic dual.

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      "source": "APS", 
      "value": "A longstanding problem with the popular Sakai-Sugimoto holographic dual of thermal QCD is that the mesinos, the (nonsupersymmetric) fermionic partners of the mesons, are nearly isospectral with mesons and have an unsuppressed mesino-mesino-meson interaction, both being in contradiction with actual QCD. We solve this problem in a UV complete (and different) type-IIA string dual at intermediate coupling of realistic thermal QCD, in which the mesinos are shown to be much heavier than and noninteracting with mesons (the wave function/mass/interaction terms receiving no <math><mrow><mi>M</mi></mrow></math>-theory <math><mi>O</mi><mo>(</mo><msup><mi>R</mi><mn>4</mn></msup><mo>)</mo></math> corrections). In particular we derive a large-<math><mi>N</mi></math> enhancement of the Kaluza-Klein <math><mo>(</mo><mi>K</mi><mi>K</mi><mo>)</mo></math> mass scale <math><msub><mi>M</mi><mrow><mi>K</mi><mi>K</mi></mrow></msub></math> (from <math><msub><mi>M</mi><mrow><mi>K</mi><mi>K</mi></mrow></msub></math> to <math><msubsup><mi>M</mi><mrow><mi>K</mi><mi>K</mi></mrow><mi>eff</mi></msubsup><mo>\u223c</mo><msup><mi>N</mi><mrow><mn>1</mn><mo>+</mo><mfrac><mn>1</mn><mrow><mi>O</mi><mo>(</mo><mn>1</mn><mo>)</mo></mrow></mfrac></mrow></msup><msub><mi>M</mi><mrow><mi>K</mi><mi>K</mi></mrow></msub></math>) arising from the construction of the type-IIA mirror [1] of the type-IIB dual [2] of thermal QCD-like theories, as well as the generation of a one-parameter family of <math><msub><mi>M</mi><mrow><mi>K</mi><mi>K</mi></mrow></msub></math>-independent mass scale at <math><mi>O</mi><mo>(</mo><msup><mi>R</mi><mn>4</mn></msup><mo>)</mo></math> in the <math><mi>M</mi></math>-theory uplift [3], wherein the parameter can be made appropriately large. We also show that the mesino-mesino-single-(<math><mi>\u03c1</mi><mo>/</mo><mi>\u03c0</mi></math>)meson interactions, vanish identically in the aforementioned type-IIA holographic dual."
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Published on:
16 November 2023
Publisher:
APS
Published in:
Physical Review D , Volume 108 (2023)
Issue 10
DOI:
https://doi.org/10.1103/PhysRevD.108.106013
arXiv:
2308.05033
Copyrights:
Published by the American Physical Society
Licence:
CC-BY-4.0

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