On the N-pion extension of the Lovelace-Shapiro model

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On the N-pion extension of the Lovelace-Shapiro model. / Bianchi, Massimo; Consoli, Dario; Di Vecchia, Paolo.

In: Journal of High Energy Physics, Vol. 2021, No. 3, 119, 11.03.2021.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Bianchi, M, Consoli, D & Di Vecchia, P 2021, 'On the N-pion extension of the Lovelace-Shapiro model', Journal of High Energy Physics, vol. 2021, no. 3, 119. https://doi.org/10.1007/JHEP03(2021)119

APA

Bianchi, M., Consoli, D., & Di Vecchia, P. (2021). On the N-pion extension of the Lovelace-Shapiro model. Journal of High Energy Physics, 2021(3), [119]. https://doi.org/10.1007/JHEP03(2021)119

Vancouver

Bianchi M, Consoli D, Di Vecchia P. On the N-pion extension of the Lovelace-Shapiro model. Journal of High Energy Physics. 2021 Mar 11;2021(3). 119. https://doi.org/10.1007/JHEP03(2021)119

Author

Bianchi, Massimo ; Consoli, Dario ; Di Vecchia, Paolo. / On the N-pion extension of the Lovelace-Shapiro model. In: Journal of High Energy Physics. 2021 ; Vol. 2021, No. 3.

Bibtex

@article{79d0ee8c072d48b8848ccbdcf904b7eb,
title = "On the N-pion extension of the Lovelace-Shapiro model",
abstract = "We reconsider a modification of the N-point amplitude of the Neveu-Schwarz (NS) model in which the tachyon becomes a pion by shifting its mass to zero and keeping the super-projective invariance of the integrand of the amplitude. For the scattering of four particles it reduces to the amplitude written by Lovelace and Shapiro that has Adler zeroes. We confirm that also the N-pion amplitude has Adler zeroes and show that it reduces to that of the non-linear sigma -model for alpha ' -> 0 keeping F-pi fixed. The four- and six-point flavour-ordered amplitudes satisfy tree-level unitarity since they can be derived from the correspondent amplitudes of the NS model in ten dimensions by suitably choosing the components of the momenta of the external mesons in the six extra dimensions. Negative norm states (ghosts) are shown to appear instead in higher-point amplitudes. We also discuss several amplitudes involving different external mesons.",
keywords = "Bosonic Strings, Conformal Field Models in String Theory, D-branes",
author = "Massimo Bianchi and Dario Consoli and {Di Vecchia}, Paolo",
year = "2021",
month = mar,
day = "11",
doi = "10.1007/JHEP03(2021)119",
language = "English",
volume = "2021",
journal = "Journal of High Energy Physics (Online)",
issn = "1126-6708",
publisher = "Springer",
number = "3",

}

RIS

TY - JOUR

T1 - On the N-pion extension of the Lovelace-Shapiro model

AU - Bianchi, Massimo

AU - Consoli, Dario

AU - Di Vecchia, Paolo

PY - 2021/3/11

Y1 - 2021/3/11

N2 - We reconsider a modification of the N-point amplitude of the Neveu-Schwarz (NS) model in which the tachyon becomes a pion by shifting its mass to zero and keeping the super-projective invariance of the integrand of the amplitude. For the scattering of four particles it reduces to the amplitude written by Lovelace and Shapiro that has Adler zeroes. We confirm that also the N-pion amplitude has Adler zeroes and show that it reduces to that of the non-linear sigma -model for alpha ' -> 0 keeping F-pi fixed. The four- and six-point flavour-ordered amplitudes satisfy tree-level unitarity since they can be derived from the correspondent amplitudes of the NS model in ten dimensions by suitably choosing the components of the momenta of the external mesons in the six extra dimensions. Negative norm states (ghosts) are shown to appear instead in higher-point amplitudes. We also discuss several amplitudes involving different external mesons.

AB - We reconsider a modification of the N-point amplitude of the Neveu-Schwarz (NS) model in which the tachyon becomes a pion by shifting its mass to zero and keeping the super-projective invariance of the integrand of the amplitude. For the scattering of four particles it reduces to the amplitude written by Lovelace and Shapiro that has Adler zeroes. We confirm that also the N-pion amplitude has Adler zeroes and show that it reduces to that of the non-linear sigma -model for alpha ' -> 0 keeping F-pi fixed. The four- and six-point flavour-ordered amplitudes satisfy tree-level unitarity since they can be derived from the correspondent amplitudes of the NS model in ten dimensions by suitably choosing the components of the momenta of the external mesons in the six extra dimensions. Negative norm states (ghosts) are shown to appear instead in higher-point amplitudes. We also discuss several amplitudes involving different external mesons.

KW - Bosonic Strings

KW - Conformal Field Models in String Theory

KW - D-branes

U2 - 10.1007/JHEP03(2021)119

DO - 10.1007/JHEP03(2021)119

M3 - Journal article

VL - 2021

JO - Journal of High Energy Physics (Online)

JF - Journal of High Energy Physics (Online)

SN - 1126-6708

IS - 3

M1 - 119

ER -

ID: 259824539