Conformal invariance and string effective actions

Conformal Invariance, Supersymmetry and String Theory

Covariant quantization of string theories is developed in the context of conformal field theory and the BRST quantization procedure. The BRST method is used to covariantly quantize superstrings, and in particular to construct the vertex operators for string emission as well as the supersymmetry charge. The calculation of string loop diagrams is sketched. We discuss how conformal methods can be ...

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Conformal invariance and degrees of freedom in the QCD string.

We demonstrate that the Hagedorn-like growth of the number of observed meson states can be used to constrain the degrees of freedom of the underlying effective QCD string. We find that the temperature relevant for such string theories is not given by the usual Hagedorn value TH ≈ 160 MeV, but is considerably higher. This resolves an apparent conflict with the results from a static quark-potenti...

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2 Hadronic string , conformal invariance and chiral symmetry

While it is clear that in some kinematic regime QCD can be described by an effective (as opposed to fundamental) string theory, it is not at all clear how this string theory should be. The 'natural' candidate, the bosonic string, leads to amplitudes with the usual problems related to the existence of the tachyon, absence of the adequate Adler zero, and massless vector particles, not to mention ...

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2 00 2 Hadronic string , conformal invariance and chiral symmetry

While it is clear that in some kinematic regime QCD can be described by an effective (as opposed to fundamental) string theory, it is not at all clear how this string theory should be. The 'natural' candidate, the bosonic string, leads to amplitudes with the usual problems related to the existence of the tachyon, absence of the adequate Adler zero, and massless vector particles, not to mention ...

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00 2 Hadronic string , conformal invariance and chiral symmetry

While it is clear that in some kinematic regime QCD can be described by an effective (as opposed to fundamental) string theory, it is not at all clear how this string theory should be. The 'natural' candidate, the bosonic string, leads to amplitudes with the usual problems related to the existence of the tachyon, absence of the adequate Adler zero, and massless vector particles, not to mention ...

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Conformal invariance and string effective actions

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منابع مشابه

Conformal Invariance, Supersymmetry and String Theory

Conformal invariance and degrees of freedom in the QCD string.

2 Hadronic string , conformal invariance and chiral symmetry

2 00 2 Hadronic string , conformal invariance and chiral symmetry

00 2 Hadronic string , conformal invariance and chiral symmetry

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