Asymmetric Gepner models II. Heterotic weight lifting
نویسندگان
چکیده
منابع مشابه
Chapter 1 Heterotic ( 0 , 2 ) Gepner Models and Related Geometries
On the sad occasion of contributing to the memorial volume “Fundamental Interactions” for my teacher Wolfgang Kummer I decided to recollect and extend some unpublished notes from the mid 90s when I started to build up a string theory group in Vienna under Wolfgang as head of the particle physics group. His extremely supportive attitude was best expressed by his saying that one should let all fl...
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We discuss D-branes from a conformal field theory point of view. In this approach, branes are described by boundary states providing sources for closed string modes, independently of classical notions. The boundary states must satisfy constraints which fall into two classes: The first consists of gluing conditions between left-and right-moving Virasoro or further symmetry generators, whereas th...
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Supersymmetric orientifolds of four dimensional Gepner Models are constructed in a systematic way. For all levels of the Gepner model being odd the generic expression for both the A-type and the B-type Klein bottle amplitude is derived. The appearing massless tadpoles are canceled by introducing appropriate boundary states of Recknagel/Schomerus(RS). After determining the Möbius strip amplitude...
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We discuss D-branes from a conformal field theory point of view. In this approach, branes are described by boundary states providing sources for closed string modes, independently of classical notions. The boundary states must satisfy constraints which fall into two classes: The first consists of gluing conditions between left-and right-moving Virasoro or further symmetry generators, whereas th...
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In tensor products of a left-right symmetric CFT, one can define permutation orientifolds by combining orientation reversal with involutive permutation symmetries. We construct the corresponding crosscap states in general rational CFTs and their orbifolds, and study in detail those in products of affine U(1)2 models or N = 2 minimal models. The results are used to construct permutation orientif...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 2011
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2011.01.011