Comparing double string theory actions

Journal article

Aimed to a deeper comprehension of a manifestly T-dual invariant formulation of string theory, in this paper a detailed comparison between the non-covariant action proposed by Tseytlin and the covariant one proposed by Hull is done. These are obtained by making both the string coordinates and their duals explicitly appear, on the same footing, in the world-sheet action, so doubling the string coordinates along the compact dimensions. After a discussion on the nature of the constraints in both the models and the relative quantization, it results that the string coordinates and their duals behave like non-commuting phase space coordinates but their expressions in terms of Fourier modes generate the oscillator algebra of the standard bosonic string. A proof of the equivalence of the two formulations is given. Furthermore, open-string solutions are also discussed. © The Authors.

Authors: De Angelis, L; Gionti, G; Marotta, R; Pezzella, F

• Publisher: Springer Heidelberg
• Journal: Journal of High Energy Physics
• Volume: 2014
• Issue: 4
• Publication date: 2014-01-01
• DOI: 10.1007/JHEP04(2014)171
• EISSN: 1029-8479
• ISSN: 1126-6708
• Language: English
• Keywords: Bosonic strings; String duality