Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Plural form of
crosscap .
Etymologies
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Examples
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The expansion coefficients are integers iff you cancel the tadpoles between orientifolds and crosscaps (not an obvious relationship).
The Reference Frame 2010
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On the worldsheet, it comes from a cancellation between boundaries and crosscaps: tadpole cancellation (vanishing of the 1-point function of the RR 0-form).
The Reference Frame 2010
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Klein surfaces have genus g, h boundaries, c crosscaps.
The Reference Frame 2010
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He's summing the amplitude over the number of crosscaps 0,1,2.
The Reference Frame 2010
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