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    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeJan 26th 2019

    slightly expanded the section Duality with M-theory, mentioning more of the MO-planes and giving more pointers

    diff, v10, current

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeJan 26th 2019

    added more references on the correspondence MO5/O4 under M/II-duality, and added a graphics

    diff, v11, current

    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeFeb 4th 2019

    added some more details (here) on how the Opp-plane charge of 2 p4- 2^{p-4} comes about via T-duality

    diff, v13, current

    • CommentRowNumber4.
    • CommentAuthorUrs
    • CommentTimeMay 14th 2019

    added brief pointer to modified O-plane charges in the presence of discrete torsion (here)

    diff, v17, current

    • CommentRowNumber5.
    • CommentAuthorUrs
    • CommentTimeMay 15th 2019

    in the section on O-plane charges I made explicit that the previous absolute numbers there must be understood in units of the corresponding D-brane charge q Dpq_{Dp}, so that the second table of charges is indeed consistent with the first, using q Dp=1/2q_{Dp} = 1/2 (as befits the orientifolding).

    diff, v18, current

    • CommentRowNumber6.
    • CommentAuthorUrs
    • CommentTimeAug 28th 2019

    expanded a little the remark (here) on counting of D-branes in orientifolds

    diff, v26, current

    • CommentRowNumber7.
    • CommentAuthorperezl.alonso
    • CommentTimeOct 20th 2023

    Here it says that: “* O-planes carry effective negative RR-charge which may (must) cancel against the actual RR- D-brane charge via RR-field tadpole cancellation.*”

    Wasn’t there some discussion about O O^- and O +O^+ planes and how that requires a choice of sign in KRKR-theory?

    • CommentRowNumber8.
    • CommentAuthorperezl.alonso
    • CommentTimeOct 20th 2023

    Ah I see you mention it in p.4 of 1909.12277.