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  Do there exist non-chiral II SUGRA theories?

+ 4 like - 1 dislike

Type IIB string theory is chiral. Do there exist non-chiral $\mathcal{N}=2$ II SUGRA theories? The answer is apparently yes. Additionally how do we understand the fact that Type IIB SUGRA is chiral and $\mathcal{N}=2$ SUSY gauge theory is (famously) non-chiral? What is the relation or what should I think about the non-chirality of extended susy and chirality of extended SUGRA?

This post imported from StackExchange Physics at 2015-03-12 12:17 (UTC), posted by SE-user Marion

asked Mar 10, 2015 in Theoretical Physics by Marion Edualdo (250 points) [ revision history ]
edited Mar 12, 2015 by dimension10

1 Answer

+ 3 like - 0 dislike

In fact the answer is "yes", the non-chiral type $II$ sugra thoery is called type $II$ A. You can obtain it by dimensional reduction from the $M$-theory sugra in $d=11$. The (massless) spectrum of type $II$ B contains spinor representations of just one chirality (which one is matter of convention), while type $II$ A contains representations of both chiralities.

The fact you say about the $\mathcal{N}=2$ supergauge theory is true in $d=4$, but not in general.

This post imported from StackExchange Physics at 2015-03-12 12:17 (UTC), posted by SE-user Oscar
answered Mar 12, 2015 by Oscar (30 points) [ no revision ]

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