String theories with deformed energy momentum relations, and a possible nontachyonic bosonic string

By João Magueijo, Lee Smolin. 2004

163 citations recorded by the source corpus.

We consider a prescription for introducing deformed dispersion relations in the bosonic string action. We find that in a subset of such theories it remains true that the embedding coordinates propagate linearly on the worldsheet. While both the string modes and the center of mass propagate with deformed dispersion relations, the speed of light remains energy independent. We consider the canonical quantization of these strings, and find that it is possible to choose theories so that ghost modes still decouple, as usual. We also find that there are examples where the tachyon is eliminated from the spectrum of the free bosonic string.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/2375950c77166a874e25f0b005a70fe32a9c5f56

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. Pouria Pedram
2. Kourosh Nozari

In Nuclear and High Energy Physics

1. Pouria Pedram
2. Kourosh Nozari
3. S. Taheri
4. A. Diab
5. Abdel Nasser Tawfik

In Statistical and Nonlinear Physics

1. Pouria Pedram
2. Kourosh Nozari
3. S. Taheri
4. Abdel Nasser Tawfik
5. A. Diab

Citations in the corpus

• The effects of minimal length and maximal momentum on the transition rate of ultra cold neutrons in gravitational field (2011, background): “ Moreover, in doubly special relativity theories, in order to preserve velocity of light and the Planck energy as two invariant quantities, the existence of a maximal momentum is essentially required [17, 18, 19]. In GUP formalism, the idea of a minimum observable length and a maximum observable mom”