TY - JOUR

T1 - Anomalies, dualities, and topology of D = 6 N = 1 superstring vacua

AU - Berkooz, Micha

AU - Leigh, Robert G.

AU - Polchinski, Joseph

AU - Schwarz, John H.

AU - Seiberg, Nathan

AU - Witten, Edward

N1 - Funding Information:
The research of MB, RGL and NS was supported in part by DOE grant #DE-FG02-96ER40559; that of JP by NSF grants #PHY91-16964 and #PHY94-07194; that of JHS by DOE grant #DE-FG03-92-ER40701; and that of EW by NSF grant #PHY95-13835.

PY - 1996/9/9

Y1 - 1996/9/9

N2 - We consider various aspects of compactifications of the Type I/heterotic Spin(32)/ℤ2 theory on K3. One family of such compactifications includes the standard embedding of the spin connection in the gauge group, and is on the same moduli space as the compactification of the heterotic E8 × E8 theory on K3 with instanton numbers (8,16). Another class, which includes an orbifold of the Type I theory recently constructed by Gimon and Polchinski and whose field theory limit involves some topological novelties, is on the moduli space of the heterotic E8 × E8 theory on K3 with instanton numbers (12,12). These connections between Spin(32)/ℤ2 and E8 × E8 models can be demonstrated by T-duality, and permit a better understanding of nonperturbative gauge fields in the (12,12) model. In the transformation between Spin(32)/ℤ2 and E8 × E8 models, the strong/weak coupling duality of the (12,12) E8 × E8 model is mapped to T-duality in the Type I theory. The gauge and gravitational anomalies in the Type I theory are canceled by an extension of the Green - Schwarz mechanism.

AB - We consider various aspects of compactifications of the Type I/heterotic Spin(32)/ℤ2 theory on K3. One family of such compactifications includes the standard embedding of the spin connection in the gauge group, and is on the same moduli space as the compactification of the heterotic E8 × E8 theory on K3 with instanton numbers (8,16). Another class, which includes an orbifold of the Type I theory recently constructed by Gimon and Polchinski and whose field theory limit involves some topological novelties, is on the moduli space of the heterotic E8 × E8 theory on K3 with instanton numbers (12,12). These connections between Spin(32)/ℤ2 and E8 × E8 models can be demonstrated by T-duality, and permit a better understanding of nonperturbative gauge fields in the (12,12) model. In the transformation between Spin(32)/ℤ2 and E8 × E8 models, the strong/weak coupling duality of the (12,12) E8 × E8 model is mapped to T-duality in the Type I theory. The gauge and gravitational anomalies in the Type I theory are canceled by an extension of the Green - Schwarz mechanism.

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U2 - 10.1016/0550-3213(96)00339-2

DO - 10.1016/0550-3213(96)00339-2

M3 - Article

AN - SCOPUS:0030576789

VL - 475

SP - 115

EP - 148

JO - Nuclear Physics B

JF - Nuclear Physics B

SN - 0550-3213

IS - 1-2

ER -