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| String Theory | ||
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| All Roads Lead to String Theory (Polchinski) | ||
Prior to the First Superstring Revolution
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| Early History | S-Matrix Theory Regge Trajectory | |
| Bosonic String Theory | Worldsheet String Bosonic String Theory String Perturbation Theory Tachyon Condensation | |
| Supersymmetric Revolution | Supersymmetry RNS Formalism GS Formalism BPS | |
Superstring Revolutions
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| First Superstring Revolution | GSO Projection Type II String Theory Type IIB String Theory Type IIA String Theory Type I String Theory Type H String Theory Type HO String Theory Type HE String Theory |
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| Second Superstring Revolution | T-Duality D-Brane S-Duality Horava-Witten String Theory M-Theory Holographic Principle N=4 Super-Yang-Mills Theory AdS CFT BFSS Matrix Theory Matrix String Theory (2,0) Theory Twistor String Theory F-Theory String Field Theory Pure Spinor Formalism |
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After the Revolutions
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| Phenomenology | String Theory Landscape Minimal Supersymmetric Standard Model String Phenomenology | |
A Negative Brane is a brane with negative tension. It resembles an Anti-Brane in having Ramond-Ramond Charge, but an anti-brane has positive tension.
A negative brane is surrounded by a naked singularity "bubble", inside which the signature of space-time changes.
In AdS/CFT, negative branes appear as the holographic duals of supergroup gauge theories.
External links[]
- Dijkgraaf, Robbert; Hedenreich, Ben., Jefferson, Patrick., Vafa, Cumrun.. "Negative Branes, Supergroups and the Signature of Spacetime". ArXiV. http://arxiv.org/abs/1603.05665.