= Massless type IIB spectrum
{title2=$128_B+128_F$}
The NS-NS fields are a <graviton>, <Kalb–Ramond field> and <dilaton>, with $35+28+1$ physical polarizations. The RR fields are $C_0,C_2,C_4$, with $1+28+35$ polarizations; the five-form field strength of $C_4$ is self-dual. Two same-chirality Majorana-Weyl <gravitini> contribute $112$ polarizations, and two Majorana-Weyl <dilatini> of the opposite chirality contribute $16$. Potential components, dual potentials and physical polarizations are different counts.
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