منابع مشابه
Ramond-Ramond Couplings on Brane-Antibrane Systems
Couplings between a closed string RR field and open strings are calculated in a system of coincident branes and antibranes of type II theory. The result can be written cleanly using the curvature of the superconnection.
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In the Green-Schwarz formalism, the closed string worldsheet of the IIB theory couples to Ramond-Ramond (RR) fluxes through spinor bilinears. We study the effect of such fluxes by analyzing the supersymmetry transformation of the worldsheet in general backgrounds. We show that, in the presence RR fields, the closed string can get ‘polarized’, as the spinors acquire non-zero vevs in directions c...
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Closed string physical states are BRST cohomology classes computed on the space of states annihilated by b−0 . Since b − 0 does not commute with the operations of picture changing, BRST cohomologies at different pictures need not agree. We show explicitly that RamondRamond (RR) zero-momentum physical states are inequivalent at different pictures, and prove that non-zero momentum physical states...
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ژورنال
عنوان ژورنال: Communications in Mathematical Physics
سال: 2019
ISSN: 0010-3616,1432-0916
DOI: 10.1007/s00220-019-03424-5