General properties of the dual resonance model

Giudice, E. Del; Vecchia, P. Di; Fubini, S.

doi:10.1016/0003-4916(72)90272-2

Cited by 260 publications

(187 citation statements)

References 16 publications

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“…Our aim is to study spectral properties of the model and the structure of its physical Fock space in analogy with the standard string theory [23,24,25,26,27,28]. This is quite possible using the above mode expansion of the fields and exploring corresponding new gauge symmetries.…”

Section: Introductionmentioning

confidence: 99%

Tensionless Strings: Physical Fock Space and Higher Spin Fields

Savvidy

2004

Int. J. Mod. Phys. A

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I study the physical Fock space of the tensionless string theory with perimeter action, exploring its new gauge symmetry algebra. The cancellation of conformal anomaly requires the space-time to be 13-dimensional. All particles are massless and there are no tachyon states in the spectrum. The zero mode conformal operator defines the levels of the physical Fock space. All levels can be classified by the highest Casimir operator W of the little group E(11) for massless particles in 11-dimensions. The ground state is infinitely degenerated and contains massless gauge fields of arbitrary large integer spin, realizing the irreducible representations of E(11) of fixed helicity. The excitation levels realize CSR representations of little group E(11) with an infinite number of helicities. After inspection of the first excitation level, which, as I prove, is a physical null state, I conjecture that all excitation levels are physical null states. In this theory the tensor field of the second rank does not play any distinctive role and therefore one can suggest that in this model there is no gravity.

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Section: Introductionmentioning

confidence: 99%

Tensionless Strings: Physical Fock Space and Higher Spin Fields

Savvidy

2004

Int. J. Mod. Phys. A

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“…Fortunately, for states not involving ghosts, more useful expressions are available, the so called DDF states [30], developed long ago in the context of string theory. Let us briefly describe the essence of the construction in a manner suitable for our model.…”

Section: Ddf Representations Of Physical Statesmentioning

confidence: 99%

“…Therefore in Sect. 3 we construct two different DDF-type representations [30], which will be used in the actual calculations. Some techinical details concerning this construction are relegated to Appendix A. Sect.…”

Section: Introductionmentioning

confidence: 99%

Space-time geometry in exactly solvable quantum dilaton gravity

Kazama

Satoh²

1994

Phys. Rev. D

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We describe in detail how one can extract space-time geometry in an exactly solvable model of quantum dilaton gravity of the type proposed by Callan, Giddings, Harvey and Strominger ( CGHS ). Based on our previous work, in which a model with 24 massless matter scalars was quantized rigorously in BRST operator formalism, we compute, without approximation, mean values of the matter stress-energy tensor, the inverse metric and some related quantities in a class of coherent physical states constructed in a specific gauge within the conformal gauge. Our states are so designed as to describe a variety of space-time in which in-falling matter energy distribution produces a black hole with or without naked sigularity. In particular, we have been able to produce the prototypical configuration first discovered by CGHS, in which a ( smeared ) matter shock wave produces a black hole without naked sigularity. †

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“…Re-interpreting this space as a space of one-particle states of a higher-dimensional theory, one realizes that the quantum analog of the Geroch group now acts as a spectrum generating symmetry: it transforms the physical states into one another and possibly generates all of them from some groundstate (if it acts transitively). This spectrum generating algebra is reminiscent of an analogous spectrum generating algebra in string theory, which consists of the physical vertex operators [25] (a vertex operator is called physical if it weakly commutes with the Virasoro constraints). These similarities will be further illuminated in section 2.3.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional gravities and supergravities as integrable systems

Nicolai

Recent Aspects of Quantum Fields

159

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General properties of the dual resonance model

Cited by 260 publications

References 16 publications

Tensionless Strings: Physical Fock Space and Higher Spin Fields

Tensionless Strings: Physical Fock Space and Higher Spin Fields

Space-time geometry in exactly solvable quantum dilaton gravity

Two-dimensional gravities and supergravities as integrable systems

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