Chiral strings, the sectorized description and their integrated vertex operators

0522499 - FZÚ 2020 RIV US eng J - Článek v odborném periodiku
Lipinski Jusinskas, Renann
Chiral strings, the sectorized description and their integrated vertex operators.
Journal of High Energy Physics. Roč. 2019, č. 12 (2019), s. 1-24, č. článku 143. ISSN 1029-8479. E-ISSN 1029-8479
Grant CEP: GA ČR GJ19-06342Y
Institucionální podpora: RVO:68378271
Klíčová slova: conformal field models in string theory * BRST quantization * scattering amplitudes
Obor OECD: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impakt faktor: 5.875, rok: 2019
Způsob publikování: Open access

A chiral string can be seen as an ordinary string in a singular gauge for the worldsheet metric and has the ambitwistor string as its tensionless limit. As proposed by Siegel, there is a one-parameter (β) gauge family interpolating between the chiral limit and the usual conformal gauge in string theory. This idea was used to compute scattering amplitudes of tensile chiral strings, which are given by standard string amplitudes with modified (β-dependent) antiholomorphic propagators. Due to the absence of a sensible definition of the integrated vertex operator, there is still no ordinary prescription for higher than 3-point amplitude computations directly from the chiral model. The exception is the tensionless limit. In this work this gap will be filled. Starting with a chiral string action, the integrated vertex operator is defined, relying on the so-called sectorized interpretation.

Trvalý link: http://hdl.handle.net/11104/0306979