String theory and the classical stability of plane waves
نویسندگان
چکیده
منابع مشابه
String theory and the Classical Stability of Plane Waves
The presence of fields with negative mass–squared typically leads to some form of instability in standard field theories. The observation that, at least in the light–cone gauge, strings propagating in plane wave spacetimes can have worldsheet scalars with such tachyon–like masses suggests that the supergravity background may itself be unstable. To address this issue, we perform a perturbative a...
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We study the spectrum of solvable string models on plane waves descending from non-conformal Dp-brane geometries. We mainly focus on S-dual F1/D1-waves in type IIB and type I/heterotic 10D superstrings. We derive the Kaluza-Klein spectrum of N = 1, 2 10D supergravities on D1/F1-waves. We compute helicity supertraces counting multiplicities and R-charges of string excitations in the plane wave g...
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We analyze the coset model (E c 2 × E c 2)/E c 2 and construct a class of exact string vacua which describe plane gravitational waves and their duals, generalizing the plane wave background found by Nappi and Witten. In particular, the vector gauging describes a two-parameter family of singular geometries with two isometries, which is dual to plane gravitational waves. In addition, there is a m...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2003
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.67.045014