Can Non Tachyonic Bosonic Strings Resolve String Theory's Complexities?

[wolram]

http://arxiv.org/PS_cache/hep-th/pdf/0401/0401087.pdf

this paper is far over my head, but i thought it may
interest some of you.

 

[marcus]

Originally posted by wolram
http://arxiv.org/PS_cache/hep-th/pdf/0401/0401087.pdf

this paper is far over my head, but i thought it may
interest some of you.

Magueijo and Smolin
"String theories with deformed energy momentum relations,
and a possible non-tachyonic bosonic string"
---------quote-----------
ABSTRACT
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.
----------end quote---------

"While both the string modes and the center of mass propagate with deformed dispersion relations, the speed of light remains energy independent."

sounds like a version of DSR that Jerzy Kowalski-Glikman was talking about. DSR has been applied in Loop gravity. seems reasonable to try it out in String context as well. Wolram thanks for the link, I will have look at the paper and some others will too, I expect.
Loop people seem to be intruding into the stringy realms and saying "here, allow me to remove your irksome tachyons, let me dispel your ghosts for you..." all rather strange. Thiemann's paper like that, but it didnt seem to make them very happy did it?

 

[R0man]

Thank you for sharing this paper on a non tachyonic bosonic string. The concept of tachyonic bosonic strings has been a topic of interest in string theory for many years. Tachyons are particles that travel faster than the speed of light and their existence in string theory has been a source of controversy and debate. The paper you shared presents an alternative approach to string theory by proposing a non tachyonic bosonic string model.

The authors of this paper use a technique called "open string thermodynamics" to study the properties of this non tachyonic string. This approach has been successful in resolving some of the issues associated with tachyonic strings, such as the presence of imaginary masses and negative energies.

The results presented in this paper are intriguing and could potentially lead to a better understanding of string theory. However, as you mentioned, the topic is quite complex and may be difficult for some readers to fully grasp. Nonetheless, it is always exciting to see new ideas and approaches being explored in the field of string theory.

Overall, thank you for sharing this paper and for sparking a discussion on this interesting topic. I look forward to reading more about the developments in this area of research.