The torelon spectrum and the world-sheet axion

Athenodorou, Andreas; Teper, M.

doi:10.48550/arxiv.2112.11213

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…We concluded to the above by the resonance character of the 0 −− , 𝑞 = 0 ground state which appears to be an axion coupled to the string's absolute ground state, by the 0 ++ second excited state which can be interpreted as a bound state of two axions with a very low binding energy coupled to the absolute ground state as well as by the 0 − 𝑞 = 1, 2 ground states which also have an axion character. Furthermore, states with axionic character can also be identified in other irreducible representations such as |𝐽 mod 4 this is a matter of presentation in the longer write-up [27]. Finally, the spectrum of the confining string, including the axionic modes appears to have insignificant large-𝑁 effects.…”

Section: Discussionmentioning

confidence: 99%

Confining strings, axions and glueballs in the planar limit

Athenodorou¹

2022

Preprint

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We present recent results on the spectrum of a confining flux-tube that is closed around a spatial torus as a function of its length as well as the spectrum of glueballs. The extraction of the spectra has been realized by simulating four dimensional 𝑆𝑈 (𝑁) gauge theories and performing measurements using lattice techniques. Regarding flux-tubes, we have performed calculations for 𝑁 = 3, 5, 6 and for various values of spin, parity and longitudinal momentum. Long flux-tubes can be thought of as infinitesimally thin strings; hence their spectrum is expected to be described by an effective string theory. Furthermore, the flux-tube's internal structure makes possible the existence of massive states in addition to string modes. Our calculations demonstrate that although most states exhibit a spectrum which can be approximated adequately by Nambu-Goto there is strong evidence for the existence of a massive axion on the world-sheet of the QCD flux-tube as well as a bound state of two such axions. Regarding glueballs, we extracted spectra from 𝑁 = 2 to 𝑁 = 12 which enables us to extrapolate to 𝑁 = ∞. Our main aim was to calculate the lightest glueball masses for all different configurations of the quantum numbers of spin, parity and charge conjugation. This provides a major update on the spectrum of glueballs in the planar limit.

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Section: Discussionmentioning

confidence: 99%

Confining strings, axions and glueballs in the planar limit

Athenodorou¹

2022

Preprint

Self Cite

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show abstract

“…Confining strings, axions and glueballs in the planar limit this is a matter of presentation in the longer write-up [27]. Finally, the spectrum of the confining string, including the axionic modes appears to have insignificant large-𝑁 effects.…”

Section: Pos(corfu2021)168mentioning

confidence: 98%

Confining strings, axions and glueballs in the planar limit

Athenodorou¹

2022

Proceedings of Corfu Summer Institute 2021 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2021)

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We present recent results on the spectrum of a confining flux tube that is closed around a spatial torus as a function of its length as well as the spectrum of glueballs. The extraction of the spectra has been realized by simulating four dimensional 𝑆𝑈 (𝑁) gauge theories and performing measurements using lattice techniques. Regarding flux-tubes, we have performed calculations for 𝑁 = 3, 5, 6 and for various values of spin, parity and longitudinal momentum. Long flux-tubes can be thought of as infinitesimally thin strings; hence their spectrum is expected to be described by an effective string theory. Furthermore, the flux-tube's internal structure makes possible the existence of massive states in addition to string modes. Our calculations demonstrate that although most states exhibit a spectrum which can be approximated adequately by Nambu-Goto there is strong evidence for the existence of a massive axion on the world-sheet of the QCD flux-tube as well as a bound state of two such axions. Regarding glueballs, we extracted spectra from 𝑁 = 2 to 𝑁 = 12 which enables us to extrapolate to 𝑁 = ∞. Our main aim was to calculate the lightest glueball masses for all different configurations of the quantum numbers of spin, parity and charge conjugation. This provides a major update on the spectrum of glueballs in the planar limit.

show abstract

The torelon spectrum and the world-sheet axion

Cited by 2 publications

References 15 publications

Confining strings, axions and glueballs in the planar limit

Confining strings, axions and glueballs in the planar limit

Confining strings, axions and glueballs in the planar limit

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