Penrose Limits of Orbifolds and Orientifolds | Zendy

E.G. Floratos | Zendy; Alex Kehagias | Zendy

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Penrose Limits of Orbifolds and Orientifolds

Author(s) -

E.G. Floratos,

Alex Kehagias

Publication year - 2002

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2002/07/031

Subject(s) - limiting , limit (mathematics) , singularity , instanton , physics , gravitational singularity , embedding , space (punctuation) , mathematical physics , theoretical physics , quantum mechanics , mathematical analysis , mathematics , philosophy , mechanical engineering , linguistics , artificial intelligence , computer science , engineering

We study the Penrose limit of various AdS_p X S^q orbifolds. The limitingspaces are waves with parallel rays and singular wave fronts. In particular, weconsider the orbifolds AdS_3 X S^3/\Gamma, AdS_5 X S^5/\Gamma and AdS_{4,7} XS^{7,4}/\Gamma where \Gamma acts on the sphere and/or the AdS factor. In thepp-wave limit, the wave fronts are the orbifolds C^2/\Gamma, C^4/\Gamma and RXC^4/\Gamma, respectively. When desingularization is possible, we getasymptotically locally pp-wave backgrounds (ALpp). The Penrose limit oforientifolds are also discussed. In the AdS_5 X RP^5 case, the limitingsingularity can be resolved by an Eguchi-Hanson gravitational instanton. Thepp-wave limit of D3-branes near singularities in F-theory is also presented.Finally, we give the embedding of D-dimensional pp-waves in flat M^{2,D} space.Comment: 20 pages, references adde

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