منابع مشابه
Note on N = 0 string as N = 1 string
A similarity transformation, which brings a particular class of the N = 1 string to the N = 0 one, is explicitly constructed. It enables us to give a simple proof for the argument recently proposed by Berkovits and Vafa. The N = 1 BRST operator is turned into the direct sum of the corresponding N = 0 BRST operator and that for an additional topological sector. As a result, the physical spectrum...
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We discuss duality between Type IIA string theory, eleven-dimensional supergravity, and heterotic string theory in four spacetime dimensions with N = 1 supersymmetry. We find theories whose infrared limit is trivial at enhanced symmetry points as well as theories with N = 1 supersymmetry but the field content of N = 4 theories which flow to the N = 4 fixed line in the infrared.
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We compute the instanton expansions of the holomorphic couplings in the effective action of certain N = 1 supersymmetric four-dimensional open string vacua. These include the superpotential W (φ), the gauge kinetic function f(φ) and a series of other holomorphic couplings which are known to be related to amplitudes of topological open strings at higher world-sheet topologies. The results are in...
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We give the general form of the vertex corresponding to the interaction of an arbitrary number of strings. The technique employed relies on the “comma” representation of String Field Theory where string fields and interactions are represented as matrices and operations between them such as multiplication and trace. The general formulation presented here shows that the interaction vertex of N st...
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We redo the quantization of the N=4 string, taking into account the reducibility of the constraints. The result is equivalent to the N=2 string, with critical dimension D=4 and signature (++−−). The N=4 formulation has several advantages: the σ-model field equations are implied classically, rather than by quantum/β-function calculations; self-duality/chirality is one of the super-Virasoro const...
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ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 1994
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732394000538